Impact Socket, Socket Size 8 mm, Socket Shape 6-Point, Drive Type Impact, Drive Size 3/8 in, Compatible Fastener Type Bolts, No, Alloy Steel, Black Oxide, Impact Rated Yes, Socket Depth Standard, Socket Length 1 3/16 in This 3/8" Drive Metric Impact Socket utilizes a ball-and-spring design, which provides a 30 Degrees working angle with smooth, 360 Degrees rotation. The TorquePlus(TM) drive 6-point configuration helps provide quick and easy socket engagement to the fastener flats, rather than the corners. It helps to distribute contact stresses over a large area of the socket, minimizing slippage. The internal design minimizes fastener rounding and allows the user to more easily turn worn, rounded, or rusted fasteners.