External Hex, Internal Hex, Internal Torx
5/16 ", 1-1/2 ", 1-1/8 ", 5.5 mm, 15/16 "
1, 1-1/2, 1/4, 2-1/2, 3/8
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
54 mm, 36 mm, 1-7/8 in, 8 in, 4-1/16 in
4-Point, 7-Point, 12-Point, 8-Point, 6-Point
-