From trucks and tractors to heavy equipment and large machinery, big service and repair jobs need the 1 in. Drive Deep Impact Socket Set. Made for use with impact wrenches, these premium chrome vanadium sockets deliver superior performance. Deep broach offers the length to reach over threaded shafts and into recesses. High-torque, 6-point design contacts and grips the stronger flat sides of fastener head, not the weaker corners, to prevent stripping or round-off under extreme stress.