Ball detent recess on drive end helps hold the socket on ratchets, adapters, and extensions
Exceeds ASME performance standards
Corner recessses on drive ends ensure torque is transmitted to the flats instead of the corners, which reduces slipping and rounding
Whether you're tightening brake calipers or assembling furniture, the Steelman 4mm x 3/8-Inch Drive Hex Bit Socket will deliver the dependable grip you need. Machined from high-strength S2 steel to prevent twisting and deformation of the socket under high loads, these sockets are designed for long-term service. The permanently stamped size markings are easy to read and won't fade away.