Proto Single 3/8" Drive 10mm Metric Hex Bit Socket, 2-3/4" Long, Great Pick for Pros and DIYers, Solid Toolbox Upgrade, Pro Driver Bit Tool for Auto Repair and Machine Work

Proto Single 3/8" Drive 10mm Metric Hex Bit Socket
✔️ 1 hex bit socket, 3/8" (9.53 mm) drive, 10 mm (0.39") size

The Proto single hex bit socket combines a driver bit and socket in one piece so you can turn screws and bolts with a ratchet. You'll see it in brake jobs, interior trim work, and machine repair, and it's ready to work hard every day.

✅ Pack size: 1 hex bit socket
✅ Brand: Proto
✅ Drive size: 3/8" (9.53 mm)
✅ Size: 10 mm (0.39")
✅ Measurement system: metric
✅ Length: 2-3/4" (69.85 mm)
✅ Mfr part number: J4990R-10M

💡 What is a triple square bit used for?
Triple square bits fit 12-point recessed bolts found on a lot of European cars.

• Common on Audi, VW, and Mercedes axle, seat, and suspension bolts
• A Torx or hex bit won't grip these bolts the right way
• The right bit keeps you from chewing up expensive fasteners