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• Reverse spiral flutes are designed to bite down providing maximum gripping power. • High carbon steel ensures longer life and greater durability. • Universal design fits all types of fasteners. • 3/8" square drive for use with hand ratchets, impact wrenches, and air ratchets; hexagonal flats for use with wrenchs, pliers, and sockets. • Set includes: 3/8", 7/16"(11mm), 1/2", 9/16"(14mm), 5/8"(16mm) in a molded case. |