The Mighty-Seven M7 mini-socket set contains six 1/2" drive impact quality sockets that are only 1-1/8" (28mm) tall, the set is available in either SAE sizes (1/2"-7/8") or metric (13mm-24mm). The mini-sockets mate perfectly with the M7 line of small but powerful impact wrenches to assist technicians in accessing small, hard-to-reach areas.