3/8" Sq.Dr. Shallow Impact Sockets, 6PT/MM: 1) STANDARD LENGTH 2) MM SIZE, RANGE: 7MM-22MM 3) ISO9001:2000, CCC 3 ... /8" Sq.Dr. Shallow Impact Sockets, 6PT / MM Specifications:7, 8, 9, 10, 11, 12, 13, 14, 15 ... , 16, 17, 18, 19, 20, 21, 22MM ALL ARE AVAILABLE Packing details: single ...