1/2"-Drive Hex-Driver SocketPrevents rounding of fasteners' corners. Thin wall design fits into tight spots. Black oxide finish bit end. Hardened for extra strength. Chamfered opening slips easily over fasteners and holds securely. Bit Length: 2 1/4 in; Drive Size: 1/2 in; Drive Type: Square; Finish: Chrome; Head Width: 0.937 in (drive side), 0.937 in (opening side); Locking Type: Ball; Material: Cold Formed Steel; Measuring System: Inch; Overall Length: 2 1/2 in; Tip Size: 3/8 in; Tip Type: Hex; Weight: 0.20 lb.