About Drill Bits
Compare material, finish, length class, and decimal size equivalents.
Flexible-Shaft Drill Bits for Wire Installation

The shaft is made of spring steel instead of hardened steel, so it flexes while drilling, allowing you to drill inside walls or between floors. A hole in the flute near the tip lets you pull wire through after holes are drilled. The end of the wire must be stripped prior to attaching it to the bit. Also known as bell hanger bits.
Use a hand guide (sold separately) to position flexible-shaft drill bits.
Use a ball guide (sold separately) to keep flexible-shaft drill bits centered between studs and drywall.
For technical drawings and 3-D models, click on a part number.
Inch Drill Bits

Round Shank
Shank | 54" Overall Lg. | 72" Overall Lg. | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Type | Size | Shaft Dia. | For Use On | Max. Drilling Dp. | Each | Max. Drilling Dp. | Each | ||
Powder-Coated Steel | |||||||||||
3/8" | 0.375" | Round | 3/16" | 3/16" | Wood | 53" | 000000 | 000000 | 71" | 000000 | 000000 |
1/2" | 0.5" | Round | 1/4" | 3/16" | Wood | 53" | 000000 | 00000 | 71" | 000000 | 00000 |
9/16" | 0.5625" | Round | 1/4" | 3/16" | Wood | 53" | 000000 | 00000 | 71" | 000000 | 00000 |
5/8" | 0.625" | Round | 1/4" | 3/16" | Wood | 53" | 000000 | 00000 | __ | 000000 | 00 |
3/4" | 0.75" | Round | 1/4" | 1/4" | Wood | 53" | 000000 | 00000 | __ | 000000 | 00 |
1" | 1" | Round | 1/4" | 1/4" | Wood | 53" | 000000 | 00000 | __ | 000000 | 00 |
Hand Guides

Hand Guide with Drill Bit

Hand Guide
For Drill Bit | |||||
---|---|---|---|---|---|
Material | Shank Type | Shaft Size | Lg. | Each | |
Steel | Round | 3/16", 1/4" | 10" | 000000 | 000000 |
Ball Guides

Ball Guide with Drill Bit

Ball Guides
For Drill Bit | |||||||
---|---|---|---|---|---|---|---|
Material | Shank Type | Shank Size | Shaft Size | Dia. | No. of Guides | Each | |
Plastic | Round | 3/16" | 3/16" | 1 1/2", 2" | 2 | 000000 | 000000 |