Steelman Single 21mm Metric Socket, Built Tough for Everyday Use, Great Pick for Pros and DIYers, Tough Hand Tool Socket for Cars, Trucks, and DIY Fix-Ups

Steelman Single 21mm Metric Socket for Pro Shop Use
✔️ 1 socket, 21 mm size, solid everyday tool, built for real work

Need a solid socket? This Steelman single socket grips nuts and bolts tight so you can turn them with a ratchet, breaker bar, or wrench, and it fits right in with auto repair, small engine work, and home garages.

✅ Pack size: 1 socket
✅ Brand: Steelman
✅ Size: 21 mm
✅ Measurement system: metric
✅ Mfr part number: 95615-04

💡 How do I know if I need a metric or SAE socket?
Match the socket to the fastener, since metric and SAE sizes don't swap well.

• Most newer cars and imports use metric bolts measured in millimeters
• Older American vehicles and a lot of equipment use SAE sizes in inches
• Using the wrong system can round off bolt heads fast