drive metric standard part no drive drive drive hex nut end for extra torque quick release coupler end size 8mm 9mm part no sockets & accessories deep extension bar set 5 piece kincromec lok-on part no drive drive size 8mm 9mm kincrome 10° wobble lok-on® extension bar sets lok-on™ extension bars include a quick release coupler and can be used as • the hex nut end allows for the use of a wrench for additional torque contents imperial standard part no size drive drive drive deep for part no lok-on® adaptor set • spring loaded ball bearing holds socket securely part no contents size kincromec lok-on adaptor set 3 piece part no k2700 kincrome socket sets & accessories