Gearwrench® socket, standard length, measurement system: metric, square drive, 1/2 in drive, 21 mm socket, 37.8 mm OAL, 19.5 mm opening depth, 27.9 mm drive end width, 27.9 mm socket end width, 12 points, 12 mm bolt clearance depth, steel, polished chrome.
Features
- Off-corner loading design for reduced fastener rounding
- Chamfered opening quickly guides fasteners into socket
- Hard stamped size markings
- Double line (SAE) and knurled (metric) ring to easily identify standard versus metric sockets
- Bright, full polished chrome finish easily wipes clean and resists corrosion
