Milwaukee
Milwaukee Tool Bit Extension 12"
- SKU:
- MLW48-28-4006
- Availability:
- Usually Ships Same Day
- Weight:
- 0.65 LBS
Description

DUTY®
12 in Extension
7/16 in Hex Shank
Extend compatible selfeed bits, auger bits and hole saws beyond the drill nose for deeper access.
Product Overview
This extension adds 12 in of reach. Check the cutter’s shank and required clearance diameter.
Fit a suitable three-jaw or 7/16 in quick-change chuck. Confirm tool and cutter capacity.
- Added reach12 in extension length.
- Hex drive7/16 in tool connection.
- Cutter optionsSelfeed, auger and hole saws.
- Chuck choiceThree-jaw or quick-change fit.
Technical Specifications
- Length
- 12 in
- Shank
- 7/16 in hex
- Min. drill chuck
- 1/2 in
- Quick-change fit
- 7/16 in
- Cutter types
- Selfeed / auger / hole saw
- Cutter diameter
- 1 in and larger
Choose the Correct Fit
Use the listed cutter types with 7/16 in shanks and a diameter of at least 1 in. Check the assembled tool’s clearance.
A three-jaw drill needs at least 1/2 in chuck capacity; the hex shaft also fits 7/16 in quick-change chucks.
Installation & Care
Disconnect power before fitting the extension and cutter. Secure both connections and support the work.
Keep the connections clean and check the shaft for damage or bending. Stop if the assembly runs out of alignment.
Small Details. Big Jobsite Energy.
Get set. Stay focused. Make your next move count.
THE NEXT JOB.
Ask Willy:
Need an extension fit check? Tell Willy the cutter diameter, shank size and drill chuck.
Important Product Questions
Which cutters can I extend?
Milwaukee lists selfeed bits, auger bits and hole saws 1 in diameter and larger with a 7/16 in shank.
Will it fit a quick-change chuck?
The 7/16 in hex shaft fits a 7/16 in quick-change chuck. It also fits suitable three-jaw chucks with at least 1/2 in capacity.
How much reach does it add?
The extension adds a full 12 in. Confirm that the longer assembly can be kept aligned and supported at the work.