Attributes . 1/4" Drive - 6 Pt Std.: 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8", 3/8" Drive - 6 Pt Std.: 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1" . Names