Attributes . 3/8" Dr 12 pt. std.: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8". 3/8" Dr 12 pt. Deep: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8". 3/8" Dr 6 pt. std.: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4" Spline . Names