3/8" Sq.Dr. Shallow Impact Sockets, 6PT/MM: 1) Both with groove and without groove are available 2) ... 3) ISO9001 3/8" Sq.Dr. Shallow Impact Sockets, 6PT / MM Specifications:7, 8, 9, 10, 11, 12, 13, 14, 15 ... our website!! 3/8" Sq.Dr. Shallow Impact Sockets, 6PT/MM