Milwaukee
Milwaukee Tool 12pc 3/8 inch Drive 12-Point Deep Well Metric Socket Set
- SKU:
- MLW48-22-9521
- Availability:
- Usually Ships Same Day
- Weight:
- 2.61 LBS
Description

DUTY®
12-Piece Metric
Deep Socket Set
A 12-piece metric deep socket selection with 12-point openings and a 3/8-inch drive.
Product Overview
Match this 12-piece metric set’s 12-point openings to the fastener sizes on your job list.
Check the 3/8-inch drive fit and deep-socket clearance around studs or recessed fasteners.
- Anti-roll flatsHelps resist rolling.
- Wrench-ready sidesWrench-compatible flats.
- Readable sizingLaser-engraved sizes.
- Organized storageSocket rail included.
Technical Specifications
- Drive size
- 3/8 in
- Sizing system
- Metric
- Fastener fit
- 12-point
- Depth
- Deep
- Finish
- Chrome-plated
- Outer profile
- Four parallel flats
Choose the Correct Fit
Check the exact socket sizes needed for your job before ordering. A set count is not a guarantee that a particular size is included.
Use a 3/8-inch drive hand tool and check retention. Seat the socket fully on the matching fastener before turning.
Installation & Care
Allow clearance for the deep body and any stud protruding through the fastener. Check that the socket can reach the hex fully.
Return each socket to the rail after cleaning. Replace cracked sockets or worn openings before the next use.
Small Details. Big Jobsite Energy.
Get set. Stay focused. Make your next move count.
THE NEXT JOB.
Ask Willy:
Need to verify a particular size or socket depth? Tell Willy your fastener list and working clearance so the GetPipe team can help check the set.
Important Product Questions
Which sizes are included?
The set includes every whole-millimeter size from 8 through 19 mm in deep sockets, with a storage rail.
Can I use a wrench on the sockets?
Yes. The outer FOUR FLAT sides are wrench-compatible. Match your wrench to the outside flats; the socket opening is a separate size.
How do I avoid choosing the wrong size system?
Confirm whether the fastener is specified in inches or millimeters. Use its exact size rather than a nearby SAE or metric substitute, and check for a snug fit.