Proto Single 1/2" Drive 21mm 6-Point Metric Socket, Steel, Chrome Finish, Solid Socket for Auto Repair and Job Sites, Go-To Tool for Weekend Wrenching and Pro Repairs

Proto Single 1/2" Drive 21mm Metric Socket
✔️ single socket, 1/2" (12.7 mm) drive, 21 mm (0.827"), 6-point, metric

Need a dependable socket you can count on? This single Proto 1/2" drive 21mm metric socket is made for auto repair and job sites. It's the kind of tool you'll reach for again and again.

✅ Pack size: 1 socket
✅ Drive size: 1/2" (12.7 mm)
✅ Size: 21 mm (0.827")
✅ Measurement system: metric
✅ 6-point design for a solid grip
✅ Material: steel
✅ Finish: chrome for rust resistance
✅ Brand: Proto
✅ Great for auto repair and job sites

💡 How do you pick the right socket drive size for a job?
Drive size should match the fastener size and how much muscle the job needs.

• 1/4 inch drive sockets are great for small bolts and tight spaces
• 3/8 inch drive is the everyday pick for most car repair
• 1/2 inch drive handles lug nuts, suspension, and big bolts
• 3/4 inch and 1 inch drive are for heavy trucks and equipment