Kennedy-Pro: 9/16" A/F Deep Socket 1/2" Square Drive Bi-Hexagon Sockets 12 point - side drive design gives a higher torque than normal sockets, grip worn nuts and will not round off existing nuts. All have a ball-retaining groove on each face of the square drive, which ensures a positive fit with accessories. Require only a one-twelfth turn to engage the next point of the socket. MPN: 5036140136489 EAN: 5036140136489 9/16" A/F Deep Socket 1/2" Square Drive Attributes: Bit Type: Bi-Hex Drive Size: 1/2in Drive Type: Square Material: Chrome Vanadium Steel Number of Points: 12 Overall Length: 77mm Size System: Imperial Socket Depth: Deep Socket Size: 9/16in Socket Type: Bi-Hexagon Socket