Counterbores

When it comes to creating perfectly countersunk holes in your woodworking projects, counterbores are an essential tool to have in your arsenal. These versatile tools are designed to drill a pilot hole for the screw and then create a larger, flat-bottomed hole to accommodate the screw head. This ensures that the screw sits flush with the surface, giving your project a professional and polished finish. Counterbores come in a variety of sizes to suit different screw sizes and can be used with a drill press or a hand drill. They are typically made from high-speed steel or carbide for durability and precision. Whether you're working on a simple DIY project or a more complex woodworking endeavor, having a quality counterbore in your toolbox will make the job faster and easier. Investing in a high-quality counterbore will not only save you time and effort, but it will also ensure that your projects look professional and well-crafted. So why not add a counterbore to your collection of woodworking tools today? Browse our selection and find the perfect counterbore for your needs.
7pcs/set Cap Screw Counterbore Set, #6 up to 1/2", part# 510-001---new
7pcs/set Cap Screw Counterbore Set, #6 up to 1/2", part# 510-001---new Ebay.com starting at $38.00

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CME Tools

Rating: 99.8%

SHARS 6 8 10 1/4-1/2 7 Pcs HSS Counterbore Set NEW #}
SHARS 6 8 10 1/4-1/2 7 Pcs HSS Counterbore Set NEW #} Ebay.com starting at $52.00

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Discount Machine Shop

Rating: 99.9%

7pcs/set Cap Screw Counterbore Set, #6 up to 1/2", part# 510-001---new
7pcs/set Cap Screw Counterbore Set, #6 up to 1/2", part# 510-001---new Ebay.com starting at $49.00

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CME Tools

Rating: 99.8%

7PC COUNTERBORE SET SOCKET CAP HEAD SCREW COUNTER BORES HSS 3-12MM RDGTOOLS
7PC COUNTERBORE SET SOCKET CAP HEAD SCREW COUNTER BORES HSS 3-12MM RDGTOOLS Ebay.com starting at $57.59

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RDGTOOLS ONLINE LTD

Rating: 99.9%

10pc 4-In-1 Modular Drill & Drive Set. Drill & Countersink or Counterbore,
10pc 4-In-1 Modular Drill & Drive Set. Drill & Countersink or Counterbore, Ebay.com starting at $24.97

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Suncoast Precision Tools

Rating: 100.0%

7pcs/set Metric Cap Screw Counterbore Set,3mm up to 12mm, part# 510-MM---new
7pcs/set Metric Cap Screw Counterbore Set,3mm up to 12mm, part# 510-MM---new Ebay.com starting at $46.00

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CME Tools

Rating: 99.8%

7 Pcs HSS Solid Cap screw Counterbore Set 6# 8 10 1/4 5/16 3/8 1/2 Sizes
7 Pcs HSS Solid Cap screw Counterbore Set 6# 8 10 1/4 5/16 3/8 1/2 Sizes Ebay.com starting at $55.50

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DBMIMPORTERS

Rating: 99.8%

SHARS TOOLS #6 8 10 1/4-1/2 7pcs Cobalt Counterbore Set #{
SHARS TOOLS #6 8 10 1/4-1/2 7pcs Cobalt Counterbore Set #{ Ebay.com starting at $126.50

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Discount Machine Shop

Rating: 99.9%

21 Pc. 5/16-5/8" HSS Counterbore Set Interchangeable Pilots 3/8" Shank
21 Pc. 5/16-5/8" HSS Counterbore Set Interchangeable Pilots 3/8" Shank Ebay.com starting at $79.99

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allindustrialtoolsupply

Rating: 99.6%

39 Pcs/Set HSS Interchangeable Pilot Counterbore Set in wooden box #510-IDX
39 Pcs/Set HSS Interchangeable Pilot Counterbore Set in wooden box #510-IDX Ebay.com starting at $229.00

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CME Tools

Rating: 99.8%

Snappy Flat Bottom Counterbore Countersink 1/8in. Drill Bit x 3/8 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 1/8in. Drill Bit x 3/8 Bore USA MADE Ebay.com starting at $17.49

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Bowers Tool

Rating: 100.0%

21 PC Set HSS Straight Shank Interchangeable Pilot Counterbore
21 PC Set HSS Straight Shank Interchangeable Pilot Counterbore Ebay.com starting at $70.50

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DBMIMPORTERS

Rating: 99.8%

M8 x 15mm COUNTERBORE TOOL HSS 3 FLUTED 1512010800 CLARKSON EUROPA TOOL  P312
M8 x 15mm COUNTERBORE TOOL HSS 3 FLUTED 1512010800 CLARKSON EUROPA TOOL P312 Ebay.com starting at $16.01

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cncpoorboy_toolstore

Rating: 100.0%

Shars 21 PC HSS Straight Shank Interchangeable Pilot Counterbore Set New L}
Shars 21 PC HSS Straight Shank Interchangeable Pilot Counterbore Set New L} Ebay.com starting at $81.50

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Discount Machine Shop

Rating: 99.9%

Snappy Flat Bottom Counterbore Countersink 3/16in. Drill Bit x 1/2 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 3/16in. Drill Bit x 1/2 Bore USA MADE Ebay.com starting at $18.49

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Bowers Tool

Rating: 100.0%

M6 x 11mm COUNTERBORE TOOL HSS 3 FLUTED 1512010600 CLARKSON EUROPA TOOL  P301
M6 x 11mm COUNTERBORE TOOL HSS 3 FLUTED 1512010600 CLARKSON EUROPA TOOL P301 Ebay.com starting at $12.09

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cncpoorboy_toolstore

Rating: 100.0%

ProCut 1" HSS Aircraft Counterbore Interchangeable Pilot 1/4" Shank
ProCut 1" HSS Aircraft Counterbore Interchangeable Pilot 1/4" Shank Ebay.com starting at $20.99

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Zeitlin Industrial Supply

Rating: 99.7%

Snappy Flat Bottom Counterbore Countersink 1/4 in. Drill Bit x 1/2 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 1/4 in. Drill Bit x 1/2 Bore USA MADE Ebay.com starting at $19.49

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Bowers Tool

Rating: 100.0%

10pcs HSS Woodruff Key Cutter Set Straight Teeth 3/8, 1/2, 5/8, 3/4, 1" IN-GWC
10pcs HSS Woodruff Key Cutter Set Straight Teeth 3/8, 1/2, 5/8, 3/4, 1" IN-GWC Ebay.com starting at $99.00

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CME Tools

Rating: 99.8%

Snappy Flat Bottom Counterbore Countersink 1/8in. Drill Bit x 1/2 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 1/8in. Drill Bit x 1/2 Bore USA MADE Ebay.com starting at $17.49

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Bowers Tool

Rating: 100.0%

Metric HSS Solid Capscrew Counterbore 7 Pcs/Set, 3 Flute, #508S-007M
Metric HSS Solid Capscrew Counterbore 7 Pcs/Set, 3 Flute, #508S-007M Ebay.com starting at $63.08

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Canada Quality Machine Shop

Rating: 100.0%

Interchangeable Pilot Counterbore Set 21Pcs/Set, Straight Shank
Interchangeable Pilot Counterbore Set 21Pcs/Set, Straight Shank Ebay.com starting at $70.77

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M&H Global

Rating: 99.6%

M10 x 18mm COUNTERBORE TOOL HSS 3 FLUTED 1512011000 EUROPA TOOL CLARKSON  P225
M10 x 18mm COUNTERBORE TOOL HSS 3 FLUTED 1512011000 EUROPA TOOL CLARKSON P225 Ebay.com starting at $16.93

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cncpoorboy_toolstore

Rating: 100.0%

M4 x 8mm COUNTERBORE HSS 3 FLUTED EUROPA TOOL CLARKSON 1512010400  P305
M4 x 8mm COUNTERBORE HSS 3 FLUTED EUROPA TOOL CLARKSON 1512010400 P305 Ebay.com starting at $11.80

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cncpoorboy_toolstore

Rating: 100.0%

7 PIECE METRIC CAPSCREW COUNTERBORE SET M3-M12
7 PIECE METRIC CAPSCREW COUNTERBORE SET M3-M12 Ebay.com starting at $48.00

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SST Industrial Solutions

Rating: 99.9%

HSS Solid Capscrew Counterbore 7 Pcs/Set, 3 Flute, Straight Shank, #508S-0007
HSS Solid Capscrew Counterbore 7 Pcs/Set, 3 Flute, Straight Shank, #508S-0007 Ebay.com starting at $63.08

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Canada Quality Machine Shop

Rating: 100.0%

ProCut 5/8" Screw Size Aircraft Square Interchangeable Pilot Counterbore
ProCut 5/8" Screw Size Aircraft Square Interchangeable Pilot Counterbore Ebay.com starting at $17.50

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Zeitlin Industrial Supply

Rating: 99.7%

7pcs T-Slot cutters set, HSS 1/4, 5/16, 3/8, 1/2, 5/8, 3/4, 1" #T-SLOT-7
7pcs T-Slot cutters set, HSS 1/4, 5/16, 3/8, 1/2, 5/8, 3/4, 1" #T-SLOT-7 Ebay.com starting at $129.00

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CME Tools

Rating: 99.8%

Dial Indicator 1” 0-100mm Diesel Cylinder Sleeve Height, Counterbore Gage
Dial Indicator 1” 0-100mm Diesel Cylinder Sleeve Height, Counterbore Gage Ebay.com starting at $231.79

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Angus Supply

Rating: 98.3%

7 Pieces Size 6,8,10,1/4,5/16,3/8,1/2 Highspeed Steel Counterbore End Mills Tool
7 Pieces Size 6,8,10,1/4,5/16,3/8,1/2 Highspeed Steel Counterbore End Mills Tool Ebay.com starting at $55.77

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M&H Global

Rating: 99.6%

Steel Counterbore Bungs for 3/8" SHCS Fabrication Weld-On MADE IN THE USA QTY 2
Steel Counterbore Bungs for 3/8" SHCS Fabrication Weld-On MADE IN THE USA QTY 2 Ebay.com starting at $12.65

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Billet Proof Designs

Rating: 98.5%

5 PIECE 8mm Adjustable Counterbore Countersink Drills Bits Countersunk Drill Bit
5 PIECE 8mm Adjustable Counterbore Countersink Drills Bits Countersunk Drill Bit Ebay.com starting at $8.99

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Red's Woodworking

Rating: 99.8%

5 PIECE 8mm Adjustable Counterbore Countersink Drills Bits- DEPTH STOP Drill Bit
5 PIECE 8mm Adjustable Counterbore Countersink Drills Bits- DEPTH STOP Drill Bit Ebay.com starting at $18.99

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Red's Woodworking

Rating: 99.8%

7 PC HSS Counterbore Set Size #6 8 10 1/4-1/2 Cap Screws Expand Holes
7 PC HSS Counterbore Set Size #6 8 10 1/4-1/2 Cap Screws Expand Holes Ebay.com starting at $55.99

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PROLINEMAX

Rating: 99.5%

Serdi Seat & Guide Machine, Valve Seat Adjustable Counterbore Cutters USA
Serdi Seat & Guide Machine, Valve Seat Adjustable Counterbore Cutters USA Ebay.com starting at $1,875.00

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M5 x 10mm COUNTERBORE TOOL HSS 3 FLUTED 1512010500 EUROPA TOOL CLARKSON  P289
M5 x 10mm COUNTERBORE TOOL HSS 3 FLUTED 1512010500 EUROPA TOOL CLARKSON P289 Ebay.com starting at $11.80

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cncpoorboy_toolstore

Rating: 100.0%

for Central Tools 6434 Dial Indicator Cylinder Sleeve Height Counterbore Gauge
for Central Tools 6434 Dial Indicator Cylinder Sleeve Height Counterbore Gauge Ebay.com starting at $136.10

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he-best2011

Rating: 99.4%

Snappy Flat Bottom Counterbore Countersink 5/16in. Drill Bit x 3/4 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 5/16in. Drill Bit x 3/4 Bore USA MADE Ebay.com starting at $32.49

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Bowers Tool

Rating: 100.0%

ProCut 7/16" HSS Aircraft Counterbore Interchangeable Pilot 1/4" Shank
ProCut 7/16" HSS Aircraft Counterbore Interchangeable Pilot 1/4" Shank Ebay.com starting at $15.50

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Zeitlin Industrial Supply

Rating: 99.7%

HSS Straight Shank Socket Counterbore Pilot Cutter Select Size
HSS Straight Shank Socket Counterbore Pilot Cutter Select Size Ebay.com starting at $6.00

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gavantools

Rating: 99.0%

5/16-5/8" 21 Pc HSS Counterbore Set 2MT Shank
5/16-5/8" 21 Pc HSS Counterbore Set 2MT Shank Ebay.com starting at $74.99

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allindustrialtoolsupply

Rating: 99.6%

Counterbore Cutters for Kwik-Way, Lot of 11 Mismatched
Counterbore Cutters for Kwik-Way, Lot of 11 Mismatched Ebay.com starting at $145.00

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RT SALES EQUIPMENT

Rating: 100.0%

9/16" HSS Counterbore - Interchangeable Pilot Type
9/16" HSS Counterbore - Interchangeable Pilot Type Ebay.com starting at $38.05

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Grand Tool Supply

Rating: 99.6%

ProCut 5/16" HSS Aircraft Counterbore Interchangeable Pilot 1/4" Shank
ProCut 5/16" HSS Aircraft Counterbore Interchangeable Pilot 1/4" Shank Ebay.com starting at $14.70

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Zeitlin Industrial Supply

Rating: 99.7%

Snappy Flat Bottom Counterbore Countersink 1/4 in. Drill Bit x 5/8 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 1/4 in. Drill Bit x 5/8 Bore USA MADE Ebay.com starting at $26.49

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Bowers Tool

Rating: 100.0%

14 Pc HSS Counterbore Set, 3 Flute, Straight Shank, inch&metric, #508S-0007+007M
14 Pc HSS Counterbore Set, 3 Flute, Straight Shank, inch&metric, #508S-0007+007M Ebay.com starting at $126.16

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Canada Quality Machine Shop

Rating: 100.0%

TREND SNAPPY 9.5MM (3/8") TCT COUNTERBORE SNAP/CB/2TC 4.75MM DRILL BIT
TREND SNAPPY 9.5MM (3/8") TCT COUNTERBORE SNAP/CB/2TC 4.75MM DRILL BIT Ebay.com starting at $31.85

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ABBEY POWER

Rating: 99.8%

Shars 40 PC 3 FLUTE HSS INTERCHANGEABLE PILOT COUNTERBORE SET New L}
Shars 40 PC 3 FLUTE HSS INTERCHANGEABLE PILOT COUNTERBORE SET New L} Ebay.com starting at $277.50

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Discount Machine Shop

Rating: 99.9%

.45 cal 9-Port .578-28 Muzzle Brake Compensator Anodize Black - no counterbore
.45 cal 9-Port .578-28 Muzzle Brake Compensator Anodize Black - no counterbore Ebay.com starting at $50.00

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KT Crafts LLC

Rating: 99.5%

7pcs/set Metric Cap Screw Counterbore Set,3mm up to 12mm part# 510-MM Free Ship
7pcs/set Metric Cap Screw Counterbore Set,3mm up to 12mm part# 510-MM Free Ship Ebay.com starting at $56.00

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CME Tools

Rating: 99.8%

21 Pc HSS Interchangeable Pilot Counterbore Set Straight Shank
21 Pc HSS Interchangeable Pilot Counterbore Set Straight Shank Ebay.com starting at $70.99

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PROLINEMAX

Rating: 99.5%

Snappy Flat Bottom Counterbore Countersink 1/4 in. Drill Bit x 1" Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 1/4 in. Drill Bit x 1" Bore USA MADE Ebay.com starting at $34.01

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Bowers Tool

Rating: 100.0%

5pc Adjustable HSS Countersink Pilot Drill Drilling Bits For Screw Gauge 6 - 14g
5pc Adjustable HSS Countersink Pilot Drill Drilling Bits For Screw Gauge 6 - 14g Ebay.com starting at $11.42

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Invbuys

Rating: 99.5%

5/16" HSS Counterbore - Interchangeable Pilot Type
5/16" HSS Counterbore - Interchangeable Pilot Type Ebay.com starting at $31.00

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Grand Tool Supply

Rating: 99.6%

Snappy Flat Bottom Counterbore Countersink 3/16in. Drill Bit x 5/8 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 3/16in. Drill Bit x 5/8 Bore USA MADE Ebay.com starting at $25.49

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Bowers Tool

Rating: 100.0%

6 SET 5298564 | Shim -Liner .020 Counterbore Shim fits Cummins ISX 1997-2015
6 SET 5298564 | Shim -Liner .020 Counterbore Shim fits Cummins ISX 1997-2015 Ebay.com starting at $160.00

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7hz-autoparts

Rating: 99.0%

39 Pcs/Set HSS Interchangeable Pilot Counterbore Set in Fitted Box, #500S-A000
39 Pcs/Set HSS Interchangeable Pilot Counterbore Set in Fitted Box, #500S-A000 Ebay.com starting at $248.65

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Canada Quality Machine Shop

Rating: 100.0%

21 Piece High Speed Steel Interchangeable Pilot Counterbore Set, #3620-0121
21 Piece High Speed Steel Interchangeable Pilot Counterbore Set, #3620-0121 Ebay.com starting at $102.69

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Canada Quality Machine Shop

Rating: 100.0%

4 Flute Pilot Slotting Tool for Milling 1/5/7PCS M3-M16 HSS Counterbore End Mill
4 Flute Pilot Slotting Tool for Milling 1/5/7PCS M3-M16 HSS Counterbore End Mill Ebay.com starting at $10.44

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LStools

Rating: 100.0%

1" HSS Counterbore - Interchangeable Pilot Type
1" HSS Counterbore - Interchangeable Pilot Type Ebay.com starting at $56.10

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Grand Tool Supply

Rating: 99.6%

3/4" HSS Counterbore - Interchangeable Pilot Type
3/4" HSS Counterbore - Interchangeable Pilot Type Ebay.com starting at $43.95

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Grand Tool Supply

Rating: 99.6%

7x M3.2-M12.4 Pilot Slotting Tool Counterbore End Mill Cutter Slot Drill Bit BE
7x M3.2-M12.4 Pilot Slotting Tool Counterbore End Mill Cutter Slot Drill Bit BE Ebay.com starting at $29.72

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bestpurchase2017

Rating: 99.0%

1/4" HSS Counterbore - Interchangeable Pilot Type - 2 pieces
1/4" HSS Counterbore - Interchangeable Pilot Type - 2 pieces Ebay.com starting at $52.30

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Grand Tool Supply

Rating: 99.6%

1/2"  HSS Counterbore - Interchangeable Pilot Type
1/2" HSS Counterbore - Interchangeable Pilot Type Ebay.com starting at $34.45

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Grand Tool Supply

Rating: 99.6%

Snappy Flat Bottom Counterbore Countersink 1/4 in. Drill Bit x 3/4 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 1/4 in. Drill Bit x 3/4 Bore USA MADE Ebay.com starting at $30.23

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Bowers Tool

Rating: 100.0%

Snappy Flat Bottom Counterbore Countersink 9/64in. Drill Bit 7/16 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 9/64in. Drill Bit 7/16 Bore USA MADE Ebay.com starting at $17.49

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Bowers Tool

Rating: 100.0%

7 Pcs Inch HSS Solid Capscrew Counterbore Set 3 Flute Straight Shank, #509S-0007
7 Pcs Inch HSS Solid Capscrew Counterbore Set 3 Flute Straight Shank, #509S-0007 Ebay.com starting at $79.22

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Canada Quality Machine Shop

Rating: 100.0%

Snappy Flat Bottom Counterbore Countersink 3/8 in. Drill Bit x 1" Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 3/8 in. Drill Bit x 1" Bore USA MADE Ebay.com starting at $34.99

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Bowers Tool

Rating: 100.0%

Motorcycle / Small Engine, Adjustable Valve Seat Counterbore Cutting System USA
Motorcycle / Small Engine, Adjustable Valve Seat Counterbore Cutting System USA Ebay.com starting at $1,475.00

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Serdi Seat & Guide Machine Adjustable Counterbore Cutters for Collet System
Serdi Seat & Guide Machine Adjustable Counterbore Cutters for Collet System Ebay.com starting at $1,650.00

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5 PIECE 10mm Adjustable Counterbore Countersink Bits Countersunk Drill Bit
5 PIECE 10mm Adjustable Counterbore Countersink Bits Countersunk Drill Bit Ebay.com starting at $8.99

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Red's Woodworking

Rating: 99.8%

Snappy Builders Set Countersink Counterbore Drill Bit Adapters Hinge Bits 48024
Snappy Builders Set Countersink Counterbore Drill Bit Adapters Hinge Bits 48024 Ebay.com starting at $148.82

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Bowers Tool

Rating: 100.0%

Snappy Flat Bottom Counterbore Countersink 5/16in. Drill Bit x 5/8 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 5/16in. Drill Bit x 5/8 Bore USA MADE Ebay.com starting at $27.49

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Bowers Tool

Rating: 100.0%

7 Pcs Premium Metric HSS Solid Capscrew Counterbore Set, 3 Flute, #509S-007M
7 Pcs Premium Metric HSS Solid Capscrew Counterbore Set, 3 Flute, #509S-007M Ebay.com starting at $79.22

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Canada Quality Machine Shop

Rating: 100.0%

Clymer #593 .705 Counterbore Large. Gunsmith Tool. (470)
Clymer #593 .705 Counterbore Large. Gunsmith Tool. (470) Ebay.com starting at $59.40

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chemicalguru6110

Rating: 99.8%

Counterbore Steel Bungs 3/8" SHCS (4) DIY Fabrication Builder MADE IN USA .75" L
Counterbore Steel Bungs 3/8" SHCS (4) DIY Fabrication Builder MADE IN USA .75" L Ebay.com starting at $18.70

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Billet Proof Designs

Rating: 98.5%

5Pcs HSS Counterbore End Mill M3-M8 Pilot Slotting Tool Milling Cutter Cou R8Q6
5Pcs HSS Counterbore End Mill M3-M8 Pilot Slotting Tool Milling Cutter Cou R8Q6 Ebay.com starting at $14.24

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directimports1899

Rating: 97.6%

1/4 HIGH SPEED STEEL 3 FLT SOLID PILOT CAP SCREW STRAIGHT SHANK COUNTERBORE 508
1/4 HIGH SPEED STEEL 3 FLT SOLID PILOT CAP SCREW STRAIGHT SHANK COUNTERBORE 508 Ebay.com starting at $19.04

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Tool and Equipment Sales Corp

Rating: 99.7%

Snappy 3/8" Depth Stop Collar for Gold Screw Countersinks 3/8in Counterbore USA
Snappy 3/8" Depth Stop Collar for Gold Screw Countersinks 3/8in Counterbore USA Ebay.com starting at $8.14

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Bowers Tool

Rating: 100.0%

2pc 3-FLUTE SOLID PILOT COUNTERBORE #8 and #10 NEW
2pc 3-FLUTE SOLID PILOT COUNTERBORE #8 and #10 NEW Ebay.com starting at $27.98

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MEITONG INDUSTRIAL SUPPLY CO

Rating: 100.0%

Snappy Flat Bottom Counterbore Countersink 3/16in. Drill Bit x 3/4 Bore USA MADE
Snappy Flat Bottom Counterbore Countersink 3/16in. Drill Bit x 3/4 Bore USA MADE Ebay.com starting at $30.49

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Bowers Tool

Rating: 100.0%

6 sets New Shim -Liner .020 Counterbore Shim fits Cummins ISX 1997-2015 5298564
6 sets New Shim -Liner .020 Counterbore Shim fits Cummins ISX 1997-2015 5298564 Ebay.com starting at $160.00

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vapourparts

Rating: 98.3%

Snappy Flat Bottom Counterbore Countersink 3/8 in. Drill Bit x 3/4 Bore USA MADE
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