For Drill Bit Shank Type For Drill Bit Shank Type |
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![]() | Round |
![]() | Hex |
![]() | Quick- Change Hex |
![]() | SDS Plus |
Shank Type Shank Type |
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![]() | Round |
![]() | Hex |
![]() | Quick- Change Hex |
![]() | SDS Plus |
For Drill Bit Shank Size For Drill Bit Shank Size |
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For Drill Bit Size For Drill Bit Size |
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For Drill Bit System of Measurement For Drill Bit Systemof Measurement |
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For Drill Bit Size Decimal Equivalent For Drill Bit SizeDecimal Equivalent |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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For Maximum Drill Torque For Maximum Drill Torque |
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Extensions for Round-Shank Drill Bits


Attach to the shank of a drill bit to extend its reach.
To attach one-piece extensions, insert a drill bit into the extension and tighten the knurled collar.
To attach two-piece extensions, insert a drill bit into the collet, then thread the collet onto the extension and tighten with a wrench.
For technical drawings and 3-D models, click on a part number.
For Drill Bit | ||||||||
---|---|---|---|---|---|---|---|---|
Size | Size Decimal Equivalent | Shank Size | Shank Size | Overall Lg. | OD | Material | Each | |
Inch | ||||||||
One Piece | ||||||||
1/64" | 0.0156" | 1/64" | 1/8" | 4" | 1/8" | Steel | 00000000 | 000000 |
1/64" | 0.0156" | 1/64" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
1/32" | 0.0313" | 1/32" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
1/32" | 0.0313" | 1/32" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
3/64" | 0.0469" | 3/64" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
1/16" | 0.0625" | 1/16" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
Two Piece | ||||||||
1/16" | 0.0625" | 1/16" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
1/16" | 0.0625" | 1/16" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
5/64" | 0.0781" | 5/64" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
5/64" | 0.0781" | 5/64" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
3/32" | 0.0938" | 3/32" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
3/32" | 0.0938" | 3/32" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
7/64" | 0.1094" | 7/64" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
7/64" | 0.1094" | 7/64" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
1/8" | 0.1250" | 1/8" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
1/8" | 0.1250" | 1/8" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
9/64" | 0.1406" | 9/64" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
9/64" | 0.1406" | 9/64" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
5/32" | 0.1563" | 5/32" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
5/32" | 0.1563" | 5/32" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
11/64" | 0.1719" | 11/64" | 1/4" | 4 1/2" | 7/16" | Steel | 00000000 | 00000 |
11/64" | 0.1719" | 11/64" | 1/4" | 9 1/2" | 7/16" | Steel | 00000000 | 00000 |
3/16" | 0.1875" | 3/16" | 1/4" | 4 1/2" | 7/16" | Steel | 00000000 | 00000 |
3/16" | 0.1875" | 3/16" | 1/4" | 9 1/2" | 7/16" | Steel | 00000000 | 00000 |
13/64" | 0.2031" | 13/64" | 1/4" | 4 1/2" | 7/16" | Steel | 00000000 | 00000 |
13/64" | 0.2031" | 13/64" | 1/4" | 9 1/2" | 7/16" | Steel | 00000000 | 00000 |
7/32" | 0.2188" | 7/32" | 1/4" | 4 1/2" | 7/16" | Steel | 00000000 | 00000 |
7/32" | 0.2188" | 7/32" | 1/4" | 9 1/2" | 7/16" | Steel | 00000000 | 00000 |
15/64" | 0.2344" | 15/64" | 1/4" | 4 1/2" | 7/16" | Steel | 00000000 | 00000 |
15/64" | 0.2344" | 15/64" | 1/4" | 9 1/2" | 7/16" | Steel | 00000000 | 00000 |
1/4" | 0.2500" | 1/4" | 1/4" | 4 1/2" | 7/16" | Steel | 00000000 | 00000 |
1/4" | 0.2500" | 1/4" | 1/4" | 9 1/2" | 7/16" | Steel | 00000000 | 00000 |
1/4" | 0.2500" | 1/4" | 3/8" | 4 1/2" | 9/16" | Steel | 00000000 | 00000 |
1/4" | 0.2500" | 1/4" | 3/8" | 9 1/2" | 9/16" | Steel | 00000000 | 00000 |
17/64" | 0.2656" | 17/64" | 3/8" | 4 1/2" | 9/16" | Steel | 00000000 | 00000 |
17/64" | 0.2656" | 17/64" | 3/8" | 9 1/2" | 9/16" | Steel | 00000000 | 00000 |
9/32" | 0.2813" | 9/32" | 3/8" | 4 1/2" | 9/16" | Steel | 00000000 | 00000 |
9/32" | 0.2813" | 9/32" | 3/8" | 9 1/2" | 9/16" | Steel | 00000000 | 00000 |
19/64" | 0.2969" | 19/64" | 3/8" | 4 1/2" | 9/16" | Steel | 00000000 | 00000 |
19/64" | 0.2969" | 19/64" | 3/8" | 9 1/2" | 9/16" | Steel | 00000000 | 00000 |
5/16" | 0.3125" | 5/16" | 3/8" | 4 1/2" | 9/16" | Steel | 00000000 | 00000 |
5/16" | 0.3125" | 5/16" | 3/8" | 9 1/2" | 9/16" | Steel | 00000000 | 00000 |
Wire Gauge | ||||||||
One Piece | ||||||||
80 ga | 0.0135" | 0.014" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
80 ga | 0.0135" | 0.014" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
79 ga | 0.0145" | 0.015" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
79 ga | 0.0145" | 0.015" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
78 ga | 0.0160" | 0.016" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
78 ga | 0.0160" | 0.016" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
77 ga | 0.0180" | 0.018" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
77 ga | 0.0180" | 0.018" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
76 ga | 0.0200" | 0.02" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
76 ga | 0.0200" | 0.02" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
75 ga | 0.0210" | 0.021" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
75 ga | 0.0210" | 0.021" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
74 ga | 0.0225" | 0.023" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
74 ga | 0.0225" | 0.023" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
73 ga | 0.0240" | 0.024" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
73 ga | 0.0240" | 0.024" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
72 ga | 0.0250" | 0.025" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
72 ga | 0.0250" | 0.025" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
71 ga | 0.0260" | 0.026" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
71 ga | 0.0260" | 0.026" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
70 ga | 0.0280" | 0.028" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
70 ga | 0.0280" | 0.028" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
69 ga | 0.0292" | 0.029" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
69 ga | 0.0292" | 0.029" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
68 ga | 0.0310" | 0.031" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
68 ga | 0.0310" | 0.031" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
67 ga | 0.0320" | 0.032" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
67 ga | 0.0320" | 0.032" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
66 ga | 0.0330" | 0.033" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
66 ga | 0.0330" | 0.033" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
65 ga | 0.0350" | 0.035" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
65 ga | 0.0350" | 0.035" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
64 ga | 0.0360" | 0.036" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
64 ga | 0.0360" | 0.036" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
63 ga | 0.0370" | 0.037" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
63 ga | 0.0370" | 0.037" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
62 ga | 0.0380" | 0.038" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
62 ga | 0.0380" | 0.038" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
61 ga | 0.0390" | 0.039" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
61 ga | 0.0390" | 0.039" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
60 ga | 0.0400" | 0.04" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
60 ga | 0.0400" | 0.04" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
59 ga | 0.0410" | 0.041" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
59 ga | 0.0410" | 0.041" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
58 ga | 0.0420" | 0.042" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
58 ga | 0.0420" | 0.042" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
57 ga | 0.0430" | 0.043" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
57 ga | 0.0430" | 0.043" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
56 ga | 0.0465" | 0.047" | 1/8" | 4" | 1/8" | Steel | 00000000 | 00000 |
56 ga | 0.0465" | 0.047" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
55 ga | 0.0520" | 0.052" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
54 ga | 0.0550" | 0.055" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
53 ga | 0.0595" | 0.06" | 3/16" | 4" | 3/16" | Steel | 00000000 | 00000 |
Two Piece | ||||||||
43 ga | 0.0890" | 0.089" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
43 ga | 0.0890" | 0.089" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
40 ga | 0.0980" | 0.098" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
40 ga | 0.0980" | 0.098" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
30 ga | 0.1285" | 0.129" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
30 ga | 0.1285" | 0.129" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
21 ga | 0.1590" | 0.159" | 1/4" | 4 1/2" | 5/16" | Steel | 00000000 | 00000 |
21 ga | 0.1590" | 0.159" | 1/4" | 9 1/2" | 5/16" | Steel | 00000000 | 00000 |
11 ga | 0.1910" | 0.191" | 1/4" | 4 1/2" | 7/16" | Steel | 00000000 | 00000 |
11 ga | 0.1910" | 0.191" | 1/4" | 9 1/2" | 7/16" | Steel | 00000000 | 00000 |
10 ga | 0.1935" | 0.194" | 1/4" | 4 1/2" | 7/16" | Steel | 00000000 | 00000 |
10 ga | 0.1935" | 0.194" | 1/4" | 9 1/2" | 7/16" | Steel | 00000000 | 00000 |
Extensions for Hex-Shank Drill Bits

Attach to the shank of a drill bit to extend its reach. Tighten the set screws to secure the drill bit in the extension.
For technical drawings and 3-D models, click on a part number.
For Drill Bit Shank Size | Shank Size | Overall Lg. | OD | Material | Includes | Each | |
One Piece | |||||||
---|---|---|---|---|---|---|---|
1/4" | 1/4" | 6" | 5/8" | Steel | Hex L-Key | 0000000 | 00000 |
1/4" | 1/4" | 12" | 5/8" | Steel | Hex L-Key | 0000000 | 0000 |
5/16" | 5/16" | 18" | 21/32" | Steel | Hex L-Key | 0000000 | 00000 |
5/16" | 5/16" | 24" | 21/32" | Steel | Hex L-Key | 0000000 | 00000 |
7/16" | 7/16" | 5 1/2" | 3/4" | Steel | Hex L-Key | 0000000 | 00000 |
7/16" | 7/16" | 12" | 3/4" | Steel | Hex L-Key | 0000000 | 00000 |
7/16" | 7/16" | 18" | 7/8" | Steel | Hex L-Key | 0000000 | 00000 |
7/16" | 7/16" | 24" | 13/16" | Steel | Hex L-Key | 0000000 | 00000 |
Quick-Change Extensions for Hex-Shank Drill Bits

A quick-change mechanism allows for fast bit changes. Attach to the shank of a drill bit to extend its reach.
For technical drawings and 3-D models, click on a part number.
Adjustable-Length Quick-Change Extensions for Hex-Shank Drill Bits

Adjust these extensions to the desired length. They have a quick-change mechanism for fast bit changes. Attach to the shank of a drill bit to extend its reach.
Extensions for SDS-Plus-Shank Drill Bits


SDS-Plus shanks have two deep slots and two shallow slots for use with SDS-Plus-drive rotary hammers. These extensions have a quick-change mechanism for fast bit changes. Attach to the shank of a drill bit to extend its reach.
For technical drawings and 3-D models, click on a part number.
Changeable-Size SDS-Max-Shank Masonry Core Drill Bits for Rotary Hammers
These bits allow you to switch to another size by changing only the bit body. They are hollow and cut with their outside edge for drilling large holes. The SDS-Max shank has three deep slots and two shallow slots for use with SDS-Max-drive rotary hammers. They cannot be used with SDS-Plus-drive rotary hammers.
Drill holes using simultaneous rotary and hammering action to break masonry material into tiny granules. This type of bit drills faster and penetrates material with less pressure than rotary-only bits. Also known as percussion or impact bits. To achieve maximum drilling depth, break up and remove the core every 4” before drilling deeper.
For technical drawings and 3-D models, click on a part number.
Flexible Bit Adapters

Bend these adapters up to 90° to access hard-to-reach fasteners. Use hex-shank bits (also known as insert bits) in drills and powered screwdrivers.
For technical drawings and 3-D models, click on a part number.