Milwaukee
Milwaukee Tool SHOCKWAVE Impact Duty 1/4"-1/2"Drive Adapter Set
- SKU:
- MLW49-66-6742
- Availability:
- Usually Ships Same Day
- Weight:
- 0.44 LBS
Description

DUTY®
1/4"–1/2" Drive
Impact Adapter Set
Keep square-drive conversion options together for matching impact tools and sockets from 1/4 to 1/2 inch.
Product Overview
Use this drive-adapter selection when the socket drive differs from the drive on your impact tool.
Choose the required input and output together; a fastener opening does not identify a socket drive.
- Socket versatilityAdapts the socket-drive size.
- Impact constructionSteel for impact fastening.
- Clear selectionCheck both drive ends.
- Fully seat jointsHelps keep drives aligned.
Technical Specifications
- Drive range
- 1/4–1/2 in square
- Material
- Forged steel
- Socket retention
- Ball detent
- Tool retention
- Dual hole + groove
- Size marking
- Laser-etched
- Standard
- ASME
Choose the Correct Fit
Check the tool input and socket output before selecting an adapter. Seat both connections fully.
Use impact-rated sockets when operating an impact tool. Do not assume an adapter changes a socket’s rating.
Installation & Care
Check clearance with the complete assembly in place. Keep the drives in line and avoid side loading.
Inspect drive corners and retention features after demanding work. Replace any damaged component before reuse.
Small Details. Big Jobsite Energy.
Get set. Stay focused. Make your next move count.
THE NEXT JOB.
Ask Willy:
Need help checking the fit? Tell Willy your tool, accessory and working dimensions so the GetPipe team can help.
Important Product Questions
Which square-drive sizes does the set cover?
The set covers conversions within the stated 1/4- to 1/2-inch square-drive range. Confirm the exact input/output pair needed before ordering.
Will an adapter increase available torque?
No. A connection change does not raise the permissible load of the tool, adapter, socket or fastener.
Can these replace an extension bar?
They are drive-conversion accessories. For added reach, select a compatible extension with the required drive and operating rating.