... )Both with groove and without groove are available 2)SIZE: 5/16"-2-1/4" 3) ISO9001 1/2" Sq.Dr. Shallow ... / INCH Specifications:5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/ ... /16, 1-3/8, 1-7/16, 1-1/2, 1-9/16, 1-5/8, 1-11/16, ... 1-7/8, 1-15/16, 2, 2-1/16, 2-1/8, 2-3/16, 2-1/4 ALL ARE AVAILABLE Packing details ... best choice.Thanks for visiting our website!! 1/2" Sq.Dr. Shallow Impact Sockets, 6PT/INCH