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Decimal Size Equivalent Decimal Size Equivalent |
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Bit ID Bit ID |
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Shank Type Shank Type |
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Threaded Hub | Round |
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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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Shank Size Shank Size |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Manufacturer Model Number Manufacturer Model Number |
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Column Feed Handle Mounting Location Column Feed HandleMounting Location |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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About Masonry Drill Bits
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Core Drill Bits for Glass and Ceramic

Reduce the chance of chipping and cracking when drilling in glass and ceramic. These hollow bits are diamond-coated for long life and fast cutting. They are for use in drill presses only and require an adapter (sold separately). Attach the threaded nut to the adapter, then install the adapter into the chuck on a drill press. Coolant, such as water, is required when drilling with these bits. The size listed is the bit's OD.
Drill press adapters attach to a water line, which acts as coolant during drilling, and include an on/off valve. Both adapters work with all of these drill bits, but choose the shank size that fits your application.
For technical drawings and 3-D models, click on a part number.

Size | Decimal Size Equivalent | Bit ID | Overall Lg. | Max. Drilling Dp. | Diamond Tip Lg. | Diamond Grit | Recommended Operating Speed, rpm | Each | |
Diamond-Coated Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
3/32" | 0.0938" | 0.043" | 3 1/2" | 2" | 1/8" | 100 | 1,800-2,400 | 0000000 | 0000000 |
1/8" | 0.125" | 0.075" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
5/32" | 0.1563" | 0.106" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
3/16" | 0.1875" | 0.137" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
7/32" | 0.2188" | 0.169" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
1/4" | 0.25" | 0.2" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
9/32" | 0.2813" | 0.231" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
5/16" | 0.3125" | 0.262" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
3/8" | 0.375" | 0.325" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
7/16" | 0.4375" | 0.387" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
1/2" | 0.5" | 0.446" | 3 1/2" | 2" | 1/4" | 100 | 1,800-2,400 | 0000000 | 000000 |
9/16" | 0.5625" | 0.504" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
5/8" | 0.625" | 0.562" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
3/4" | 0.75" | 0.692" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
7/8" | 0.875" | 0.817" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
1" | 1" | 0.94" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
1 1/4" | 1.25" | 1.19" | 3 1/2" | 2" | 1/4" | 100 | 1,250-1,800 | 0000000 | 000000 |
Masonry Drill Bits for Drilling Rigs
Use these diamond-coated hollow bits for wet drilling of masonry, concrete, and rebar with a drilling rig. They're not for dry drilling or use with portable electric drills or grinders. The size listed is the bit’s OD.
Adapters let you use your bit on a drilling rig with a different thread size.

Shank | |||||||||||
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Size | Decimal Size Equivalent | Bit ID | Overall Lg. | Max. Drilling Dp. | Thread Size | Type | Size | Point Style | For Use On | Each | |
Diamond-Coated Steel | |||||||||||
1" | 1" | 3/4" | 15 1/2" | 13" | 5/8"-11 | Threaded Hub | 1" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 0000000 |
1 1/8" | 1.125" | 7/8" | 15 1/2" | 13" | 5/8"-11 | Threaded Hub | 1 1/8" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
1 1/4" | 1.25" | 1" | 15 1/2" | 13" | 5/8"-11 | Threaded Hub | 1 1/4" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
1 3/8" | 1.375" | 1 1/8" | 15 1/2" | 13" | 5/8"-11 | Threaded Hub | 1 3/8" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
1 1/2" | 1.5" | 1 1/4" | 15 1/2" | 13" | 5/8"-11 | Threaded Hub | 1 1/2" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
1 3/4" | 1.75" | 1 1/2" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 1 3/4" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
2" | 2" | 1 3/4" | 16 1/2" | 14" | 1 1/4"-7 | Threaded Hub | 2" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
2 1/4" | 2.25" | 2" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 2 1/4" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
2 1/2" | 2.5" | 2 1/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 2 1/2" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
2 3/4" | 2.75" | 2 1/2" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 2 3/4" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
3" | 3" | 2 3/4" | 16 1/2" | 14" | 1 1/4"-7 | Threaded Hub | 3" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
3 1/2" | 3.5" | 3 1/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 3 1/2" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
4" | 4" | 3 3/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 4" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
4 1/2" | 4.5" | 4 1/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 4 1/2" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
5" | 5" | 4 3/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 5" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
6" | 6" | 5 3/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 6" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
7" | 7" | 6 3/4" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 7" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
8" | 8" | 7 5/8" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 8" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
10" | 10" | 9 5/8" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 10" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |
12" | 12" | 11 5/8" | 15 1/2" | 13" | 1 1/4"-7 | Threaded Hub | 12" | Standard | Masonry, Concrete, Reinforced Concrete, Rebar | 0000000 | 000000 |

Overall Lg. | Male Thread Size | Female Thread Size | For Drill Bit Shank Type | Each | |
5 3/8" | 5/8"-11 | 1 1/4"-7 | Threaded Hub | 0000000 | 0000000 |
Thread Adapters for Masonry Drill Bits for Drilling Rigs

Adapt a bit for use on a drilling rig with a different thread size.
Overall Length | Male Thread Size | Female Thread Size | For Drill Bit Shank Type | Each | |
5 3/8" | 5/8"-11 | 1 1/4"-7 | Threaded Hub | 0000000 | 0000000 |
Mobile Drilling Rigs for Masonry Drill Bits

Roll this drilling rig to where you need it and cut holes in masonry, reinforced concrete, tile, marble, and natural stone. Rig and motor are sold separately. For drill bits, see Masonry Drill Bits for Drilling Rigs
The rig has a rack-and-pinion feed mechanism and feed wheel that mounts on either side of the column. The column can be set at any angle up to 45° for when angled drilling is required. The base has a mounting slot to secure it to the floor or wall. The meter box indicates proper drilling pressure and speed.
When you need to use a drill bit size larger than 10" in your drilling rig, add a spacer assembly to increase its drill bit size up to 14".
Drilling Rigs | |||||||||||||||
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Column | Spacer Assemblies | ||||||||||||||
For Max. Masonry Drill Bit Size | Max. Hole Dia. | Wt., lbs. | O'all Ht. | Meter Box Plug Connection Type | Meter Box Plug NEMA Style | Travel | Ht. | Range of Motion | Manufacturer | Manufacturer Model No. | Includes | Each | Each | ||
Cast Aluminum Base | |||||||||||||||
10" | 10" | 105 | 47" | Turn Lock | L5-20 | 28" | 43 1/2" | 0°-45° | Milwaukee | 4136 | Air Filter, Air Hose, Bubble Level | 0000000 | 000000000 | 0000000 | 000000 |
Spacer Assemblies for Mobile Drilling Rigs

Add these spacer assemblies to your drilling rig to allow it to accept drill bit sizes up to 14".
For Max. Masonry Drill Bit Size | Manufacturer | Manufacturer Model Number | Each | |
14" | Milwaukee | 49-67-0110 | 0000000 | 000000 |
Motors for Mobile Drilling Rigs

Use this motor with a Milwaukee mobile drilling rig for masonry drill bits. It has triple gear reduction and a clutch to protect against overload. A built-in water swivel and adapter accepts a standard water hose and water control valve.
NEMA Plug | |||||||||||
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For Bit Shank Thread Size | Max. No-Load Speed, rpm | No. of Speeds | Current, A | Voltage | Connection Type | Style | Wt. | Manufacturer | Manufacturer Model No. | Each | |
1 1/4"-7 | 900 | 2 | 20 | 120V AC | Turn Lock | L5-20 | 25 lbs. | Milwaukee | 4096 | 0000000 | 0000000 |