Facom 3/4" Drive Adapter (K.230B) - 3/4" to 1/2" . For adapting 1/2" drive sockets and accessories. Maximum torque = 512nm. Chrome finish with phosphate square. The square drive can be replaced if broken through excessive torque...see K.230B1. Note - USAG offers the exact same item for a slightly lower cost but it is more readily available and comes with a US warranty.