Made of drop forged steel, wrenches are chrome plated and heat treated to achieve maximum wear. A raised panel provides additional strength and durability. Packaged in kit bag organizer Set includes: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 151/16", 1", 1-1/16", 1-1/8" and 1-1/4".