Features and Benefits: * Redesigned chamfered drive means easy attachment to power tool * Externally necked down design for maximum bolt clearance * Individual sockets are covered under GP Lifetime Warranty * Comes complete in a blow molded storage case Sizes include: 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16" and 1".