The Beta 920/55 1/2" drive reversible ratchet works with any standard 1/2" square drive socket. This ratchet features a unique reversing mechanism that uses a low-profile slider that snaps securely from side to side, so it won't accidentally shift into reverse if bumped as with standard levers. The extra-fine 72-tooth ratchet requires just 5 degrees of rotation to engage, and the solid, 17-tooth pawl fully engages all 17 teeth at once for maximum torque and resistance to slippage. The ergonomic bi-material handle has black rubberized inserts for a secure comfort grip, with a hole at the end to secure a lanyard or to hang for storage. The phosphate matte finish of the drive portion of the handle also helps to provide a secure grip while handling. This reversible ratchet measures 271mmm (10.67") in overall length with a 40mm (1.57") head diameter and 41mm (1.61") head thickness.