Milwaukee
Milwaukee Tool COMP ELECTROMAGNETIC DRILL 1/2" CHUCK ADAPTER
- SKU:
- MLW48-66-2125
- Availability:
- Usually Ships Same Day
- Weight:
- 1.55 LBS
Description

DUTY®
Magnetic Drill
1/2 in Chuck Adapter
Adapt the specified compact electromagnetic drill for suitable twist bits.
Product Overview
The 48-66-2125 adapter is for Milwaukee compact electromagnetic drills 4270-20 and 4270-21. It uses a 3/4 in Weldon connection with two retaining flats.
The specified drilling arrangement accepts twist bits up to 1/2 in diameter and 6 in long. Follow the drill’s adapter-installation and operating instructions.
- Twist-bit setupAdapts the specified magnetic drill for conventional twist bits.
- Weldon connectionThe 3/4 in interface mounts in the matching holder.
- Flat-sided retentionTwo flats provide the set-screw engagement surfaces.
- Compact-drill fitListed for Milwaukee 4270-20 and 4270-21.
Technical Specifications
- Model
- 48-66-2125
- Accessory type
- Chuck adapter
- Machine connection
- 3/4 in Weldon
- Maximum stated bit diameter
- 1/2 in
- Maximum stated bit length
- 6 in
- Listed drills
- 4270-20 /4270-21
Choose the Correct Fit
Confirm the drill and holder support this adapter rather than relying on shank diameter alone.
Select twist bits within the drill’s permitted setup: the stated maximum is 1/2 in diameter and 6 in length.
Installation & Care
Disconnect power before fitting the adapter. Secure the set screws against the specified flats as directed.
Check bit retention and the machine’s safety-chain setup before drilling. Inspect the adapter for wear during service.
Small Details. Big Jobsite Energy.
Get set. Stay focused. Make your next move count.
THE NEXT JOB.
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Important Product Questions
Which drills are listed?
Milwaukee lists compact electromagnetic drills 4270-20 and 4270-21.
What shank interface is used?
The adapter uses a 3/4 in Weldon connection with two retaining flats.
What twist-bit limits are stated?
The 4270 application is listed for twist bits up to 1/2 in diameter and 6 in long.