External Hex, Internal Hex, Internal Torx
5/16 ", 25 mm, 11 mm, 5/8 ", 1-3/8 "
3/4, 1-1/2, 3/8, 2-1/2, 1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
43 mm, 5/8 in, 3/4 in, 9/16 in, 4-3/4 in, 35 mm
External Torx, 4-Point, 7-Point, 8-Point, 6-Point
-