Home

Industrial & Scientific

Cutting Tools

Counterbores

Drill America 1/4" X 3/32" High Speed Steel Aircraft Counterbore 1/4" Shank, Dew Series

Compare price from $18.33 ~ $112.84

Compare Buying Options

Sort by Lowest Price	Item price	Delivery
CTI Industrial Supply 1-9/16 X 7/16 Pilot Hole HSS Straight Shank Counterbore	$112.84	Delivery date & cost shown at checkout

CTI Industrial Supply 1/4 X 3/32 Pilot Hole HSS Straight Shank Counterbore	$20.08	Delivery date & cost shown at checkout

CTI Industrial Supply 19/32 X 1/8 HSS Aircraft Counterbore 1/4 Shank	$31.50	Delivery date & cost shown at checkout

CTI Industrial Supply 23/32 X 1/4 Pilot Hole HSS Straight Shank Counterbore	$32.14	Delivery date & cost shown at checkout

CTI Industrial Supply 27/32 X 1/4 Pilot Hole HSS Straight Shank Counterbore	$36.11	Delivery date & cost shown at checkout

CTI Industrial Supply 3/16 X 3/32 Pilot Hole HSS Straight Shank Counterbore	$18.63	Delivery date & cost shown at checkout

CTI Industrial Supply 3/4 X 1/4 Pilot Hole HSS Straight Shank Counterbore	$32.14	Delivery date & cost shown at checkout

CTI Industrial Supply 5/16 X 3/32 HSS Aircraft Counterbore 1/4 Shank	$22.44	Delivery date & cost shown at checkout

CTI Industrial Supply 5/16 X 3/32 Pilot Hole HSS Straight Shank Counterbore	$20.57	Delivery date & cost shown at checkout

CTI Industrial Supply 7/16 X 5/32 Pilot Hole HSS Straight Shank Counterbore	$22.32	Delivery date & cost shown at checkout

CTI Industrial Supply 7/32 X 3/32 Pilot Hole HSS Straight Shank Counterbore	$18.63	Delivery date & cost shown at checkout

CTI Industrial Supply 9/16 X 1/8 HSS Aircraft Counterbore 1/4 Shank	$29.53	Delivery date & cost shown at checkout

CTI Industrial Supply 9/16 X 3/16 Pilot Hole HSS Straight Shank Counterbore	$26.22	Delivery date & cost shown at checkout

CTI Industrial Supply 9/32 X 3/32 Pilot Hole HSS Straight Shank Counterbore	$20.08	Delivery date & cost shown at checkout

Strobels Supply 9/16" X1/8 High Speed A/C Countrbore 1/4" Shank Drill America	$29.02	Delivery date & cost shown at checkout

Drillsandcutters.com 1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank by DrillsandCutters.com	$24.23	Delivery date & cost shown at checkout

eBay 1 X 3/16 Hss Aircraft Counterbore 1/4 Shank	$59.18	Delivery date & cost shown at checkout

Mutual Screw & Supply Aircraft Counterbore, 1/4" Shank 1 Counterbore	$63.65	Delivery date & cost shown at checkout

Tillman Tools DEWA/CCBR23/32 23/32" X 3/16" HSS Aircraft Counterbore \| Drill America - Tillman Tools	$39.07	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR1 1" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR1 - Tillman Tools	$53.15	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR1/2 1/2" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR1/2 - Tillman Tools	$27.33	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR1/4 1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR1/4 - Tillman Tools	$23.51	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR11/16 11/16" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR11/16 - Tillman Tools	$37.56	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR13/16 13/16" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR13/16 - Tillman Tools	$39.99	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR13/32 13/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR13/32 - Tillman Tools	$27.14	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR15/32 15/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR15/32 - Tillman Tools	$26.85	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR17/32 17/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR17/32 - Tillman Tools	$31.33	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR19/32 19/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR19/32 - Tillman Tools	$34.03	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR21/32 21/32" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR21/32 - Tillman Tools	$37.12	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR27/32 27/32" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR27/32 - Tillman Tools	$41.89	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR3/4 3/4" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR3/4 - Tillman Tools	$39.09	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR3/8 3/8" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR3/8 - Tillman Tools	$24.73	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR31/32 31/32" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR31/32 - Tillman Tools	$52.72	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR5/16 5/16" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR5/16 - Tillman Tools	$24.25	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR5/8 5/8" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR5/8 - Tillman Tools	$34.03	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR7/16 7/16" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR7/16 - Tillman Tools	$26.04	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR7/8 7/8" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR7/8 - Tillman Tools	$41.89	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR9/16 9/16" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR9/16 - Tillman Tools	$31.89	Delivery date & cost shown at checkout

Tillman Tools Drill America DEWA/CCBR9/32 9/32" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR9/32 - Tillman Tools	$23.96	Delivery date & cost shown at checkout

Bayou Tool Services Drill America - 29/64 X 5/32 Pilot Hole HSS Straight Shank Counterbore \| Premium Counterbores by Drill America	$24.84	Delivery date & cost shown at checkout

Bayou Tool Services Drill America - 3/16 X 3/32 Pilot Hole HSS Straight Shank Counterbore \| Premium Counterbores by Drill America	$18.33	Delivery date & cost shown at checkout

Bayou Tool Services Drill America - 9/16 X 1/8 HSS Aircraft Counterbore 1/4 Shank \| Premium Counterbores by Drill America	$29.03	Delivery date & cost shown at checkout

Bayou Tool Services Drill America - 9/32 X 3/32 Pilot Hole HSS Straight Shank Counterbore \| Premium Counterbores by Drill America	$19.73	Delivery date & cost shown at checkout

HoleCuttersDrillBits 1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank	$24.18	Delivery date & cost shown at checkout

Amazon.com Drill America 1/4" X 3/32" High Speed Steel Aircraft Counterbore 1/4" Shank, Dew Series	$24.48	Delivery date & cost shown at checkout

Zoro Drill America DEWA/CCBR1/4 1/4"x3/32" Hss Aircraft Counterbore 1/4" Sh	$21.69	Delivery date & cost shown at checkout

112.84
CTI Industrial Supply
1-9/16 X 7/16 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
20.08
CTI Industrial Supply
1/4 X 3/32 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
31.50
CTI Industrial Supply
19/32 X 1/8 HSS Aircraft Counterbore 1/4 Shank
Delivery date & cost shown at checkout
32.14
CTI Industrial Supply
23/32 X 1/4 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
36.11
CTI Industrial Supply
27/32 X 1/4 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
18.63
CTI Industrial Supply
3/16 X 3/32 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
32.14
CTI Industrial Supply
3/4 X 1/4 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
22.44
CTI Industrial Supply
5/16 X 3/32 HSS Aircraft Counterbore 1/4 Shank
Delivery date & cost shown at checkout
20.57
CTI Industrial Supply
5/16 X 3/32 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
22.32
CTI Industrial Supply
7/16 X 5/32 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
18.63
CTI Industrial Supply
7/32 X 3/32 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
29.53
CTI Industrial Supply
9/16 X 1/8 HSS Aircraft Counterbore 1/4 Shank
Delivery date & cost shown at checkout
26.22
CTI Industrial Supply
9/16 X 3/16 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
20.08
CTI Industrial Supply
9/32 X 3/32 Pilot Hole HSS Straight Shank Counterbore
Delivery date & cost shown at checkout
29.02
Strobels Supply
9/16" X1/8 High Speed A/C Countrbore 1/4" Shank Drill America
Delivery date & cost shown at checkout
24.23
Drillsandcutters.com
1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank by DrillsandCutters.com
Delivery date & cost shown at checkout
59.18
eBay
1 X 3/16 Hss Aircraft Counterbore 1/4 Shank
Delivery date & cost shown at checkout
63.65
Mutual Screw & Supply
Aircraft Counterbore, 1/4" Shank 1 Counterbore
Delivery date & cost shown at checkout
39.07
Tillman Tools
DEWA/CCBR23/32 23/32" X 3/16" HSS Aircraft Counterbore | Drill America - Tillman Tools
Delivery date & cost shown at checkout
53.15
Tillman Tools
Drill America DEWA/CCBR1 1" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR1 - Tillman Tools
Delivery date & cost shown at checkout
27.33
Tillman Tools
Drill America DEWA/CCBR1/2 1/2" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR1/2 - Tillman Tools
Delivery date & cost shown at checkout
23.51
Tillman Tools
Drill America DEWA/CCBR1/4 1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR1/4 - Tillman Tools
Delivery date & cost shown at checkout
37.56
Tillman Tools
Drill America DEWA/CCBR11/16 11/16" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR11/16 - Tillman Tools
Delivery date & cost shown at checkout
39.99
Tillman Tools
Drill America DEWA/CCBR13/16 13/16" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR13/16 - Tillman Tools
Delivery date & cost shown at checkout
27.14
Tillman Tools
Drill America DEWA/CCBR13/32 13/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR13/32 - Tillman Tools
Delivery date & cost shown at checkout
26.85
Tillman Tools
Drill America DEWA/CCBR15/32 15/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR15/32 - Tillman Tools
Delivery date & cost shown at checkout
31.33
Tillman Tools
Drill America DEWA/CCBR17/32 17/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR17/32 - Tillman Tools
Delivery date & cost shown at checkout
34.03
Tillman Tools
Drill America DEWA/CCBR19/32 19/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR19/32 - Tillman Tools
Delivery date & cost shown at checkout
37.12
Tillman Tools
Drill America DEWA/CCBR21/32 21/32" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR21/32 - Tillman Tools
Delivery date & cost shown at checkout
41.89
Tillman Tools
Drill America DEWA/CCBR27/32 27/32" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR27/32 - Tillman Tools
Delivery date & cost shown at checkout
39.09
Tillman Tools
Drill America DEWA/CCBR3/4 3/4" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR3/4 - Tillman Tools
Delivery date & cost shown at checkout
24.73
Tillman Tools
Drill America DEWA/CCBR3/8 3/8" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR3/8 - Tillman Tools
Delivery date & cost shown at checkout
52.72
Tillman Tools
Drill America DEWA/CCBR31/32 31/32" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR31/32 - Tillman Tools
Delivery date & cost shown at checkout
24.25
Tillman Tools
Drill America DEWA/CCBR5/16 5/16" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR5/16 - Tillman Tools
Delivery date & cost shown at checkout
34.03
Tillman Tools
Drill America DEWA/CCBR5/8 5/8" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR5/8 - Tillman Tools
Delivery date & cost shown at checkout
26.04
Tillman Tools
Drill America DEWA/CCBR7/16 7/16" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR7/16 - Tillman Tools
Delivery date & cost shown at checkout
41.89
Tillman Tools
Drill America DEWA/CCBR7/8 7/8" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR7/8 - Tillman Tools
Delivery date & cost shown at checkout
31.89
Tillman Tools
Drill America DEWA/CCBR9/16 9/16" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR9/16 - Tillman Tools
Delivery date & cost shown at checkout
23.96
Tillman Tools
Drill America DEWA/CCBR9/32 9/32" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR9/32 - Tillman Tools
Delivery date & cost shown at checkout
24.84
Bayou Tool Services
Drill America - 29/64 X 5/32 Pilot Hole HSS Straight Shank Counterbore | Premium Counterbores by Drill America
Delivery date & cost shown at checkout
18.33
Bayou Tool Services
Drill America - 3/16 X 3/32 Pilot Hole HSS Straight Shank Counterbore | Premium Counterbores by Drill America
Delivery date & cost shown at checkout
29.03
Bayou Tool Services
Drill America - 9/16 X 1/8 HSS Aircraft Counterbore 1/4 Shank | Premium Counterbores by Drill America
Delivery date & cost shown at checkout
19.73
Bayou Tool Services
Drill America - 9/32 X 3/32 Pilot Hole HSS Straight Shank Counterbore | Premium Counterbores by Drill America
Delivery date & cost shown at checkout
24.18
HoleCuttersDrillBits
1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank
Delivery date & cost shown at checkout
24.48
Amazon.com
Drill America 1/4" X 3/32" High Speed Steel Aircraft Counterbore 1/4" Shank, Dew Series
Delivery date & cost shown at checkout
21.69
Zoro
Drill America DEWA/CCBR1/4 1/4"x3/32" Hss Aircraft Counterbore 1/4" Sh
Delivery date & cost shown at checkout

Product Details

Aircraft counter bore

High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance

Round shanks allow use with a wide variety of tool holding systems

Counter boring is the enlargement of a portion of a hole that has previously been formed

The counter bore is a two-piece construction, having an integral shank and counter bore-cutter, and a pilot that is interchangeable, which provides flexibility in the use of the tool

Popular Products

Kerrits Kids Ice Fil Lite Equestrian Long Sleeve Shirt – Cooling Kids Sun Protection Shirt for Horse Riding and Outdoor Sport

$49

Compare at 51 stores

Kerrits Women's Ice Fil Lite Long Sleeve Shirt – Cooling Sun Protection Shirt for Horse Riding, Golf, Hiking

$59

Compare at 51 stores

HORZE Grand Prix Mens Silicone Grip Full Seat Breeches

$149.99

Compare at 51 stores

Propper Men's F53125, Black , Large Regular

$36.87

Compare at 51 stores

TuffRider Ladies Belmont Field Boot

$279

Compare at 51 stores

Drill America 1/4" X 3/32" High Speed Steel Aircraft Counterbore 1/4" Shank, Dew Series

Compare Buying Options

1-9/16 X 7/16 Pilot Hole HSS Straight Shank Counterbore

1/4 X 3/32 Pilot Hole HSS Straight Shank Counterbore

19/32 X 1/8 HSS Aircraft Counterbore 1/4 Shank

23/32 X 1/4 Pilot Hole HSS Straight Shank Counterbore

27/32 X 1/4 Pilot Hole HSS Straight Shank Counterbore

3/16 X 3/32 Pilot Hole HSS Straight Shank Counterbore

3/4 X 1/4 Pilot Hole HSS Straight Shank Counterbore

5/16 X 3/32 HSS Aircraft Counterbore 1/4 Shank

5/16 X 3/32 Pilot Hole HSS Straight Shank Counterbore

7/16 X 5/32 Pilot Hole HSS Straight Shank Counterbore

7/32 X 3/32 Pilot Hole HSS Straight Shank Counterbore

9/16 X 1/8 HSS Aircraft Counterbore 1/4 Shank

9/16 X 3/16 Pilot Hole HSS Straight Shank Counterbore

9/32 X 3/32 Pilot Hole HSS Straight Shank Counterbore

9/16" X1/8 High Speed A/C Countrbore 1/4" Shank Drill America

1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank by DrillsandCutters.com

1 X 3/16 Hss Aircraft Counterbore 1/4 Shank

Aircraft Counterbore, 1/4" Shank 1 Counterbore

DEWA/CCBR23/32 23/32" X 3/16" HSS Aircraft Counterbore | Drill America - Tillman Tools

Drill America DEWA/CCBR1 1" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR1 - Tillman Tools

Drill America DEWA/CCBR1/2 1/2" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR1/2 - Tillman Tools

Drill America DEWA/CCBR1/4 1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR1/4 - Tillman Tools

Drill America DEWA/CCBR11/16 11/16" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR11/16 - Tillman Tools

Drill America DEWA/CCBR13/16 13/16" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR13/16 - Tillman Tools

Drill America DEWA/CCBR13/32 13/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR13/32 - Tillman Tools

Drill America DEWA/CCBR15/32 15/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR15/32 - Tillman Tools

Drill America DEWA/CCBR17/32 17/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR17/32 - Tillman Tools

Drill America DEWA/CCBR19/32 19/32" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR19/32 - Tillman Tools

Drill America DEWA/CCBR21/32 21/32" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR21/32 - Tillman Tools

Drill America DEWA/CCBR27/32 27/32" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR27/32 - Tillman Tools

Drill America DEWA/CCBR3/4 3/4" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR3/4 - Tillman Tools

Drill America DEWA/CCBR3/8 3/8" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR3/8 - Tillman Tools

Drill America DEWA/CCBR31/32 31/32" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR31/32 - Tillman Tools

Drill America DEWA/CCBR5/16 5/16" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR5/16 - Tillman Tools

Drill America DEWA/CCBR5/8 5/8" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR5/8 - Tillman Tools

Drill America DEWA/CCBR7/16 7/16" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR7/16 - Tillman Tools

Drill America DEWA/CCBR7/8 7/8" X 3/16" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR7/8 - Tillman Tools

Drill America DEWA/CCBR9/16 9/16" X 1/8" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR9/16 - Tillman Tools

Drill America DEWA/CCBR9/32 9/32" X 3/32" HSS Aircraft Counterbore 1/4" Shank, DEWA/CCBR9/32 - Tillman Tools

Drill America - 29/64 X 5/32 Pilot Hole HSS Straight Shank Counterbore | Premium Counterbores by Drill America

Drill America - 3/16 X 3/32 Pilot Hole HSS Straight Shank Counterbore | Premium Counterbores by Drill America

Drill America - 9/16 X 1/8 HSS Aircraft Counterbore 1/4 Shank | Premium Counterbores by Drill America

Drill America - 9/32 X 3/32 Pilot Hole HSS Straight Shank Counterbore | Premium Counterbores by Drill America

1/4" X 3/32" HSS Aircraft Counterbore 1/4" Shank