Description Reverse spiral flutes provide max. gripping power High carbon steel ensures longer life Universal lobular design fits all fasteners 3/8″ square drive for use with hand ratchets – impact wrenches and air ratchets Hexagonal flats for use with flat wrench – pliers, adjustable wrench, sockets or VISE-GRIP locking pliers Includes one each: 3/8″, 7/16″(11mm), 1/2″, 9/16″(14mm), and 5/8″ (16mm)
