3/8" Sq.Dr. Shallow Impact Sockets, 6PT/MM: 1) Both with groove ... are available 2) SIZE: 7MM-22MM 3) ISO9001 3/8" Sq.Dr. Shallow Impact Sockets, 6PT / MM Specifications:7, 8, 9 ... , 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, ... your best choice.Thanks for visiting our website!! 3/8" Sq.Dr. Shallow Impact Sockets, 6PT/MM