External Hex, Internal Hex, Internal Torx
9 mm, 5/16 ", 1-1/2 ", 5/8 ", 9/16 "
3/4, 1/4, 2-1/2, 3/8, 1-1/2
Phosphated, Phosphatized, Gun-metal, Black Oxide, Black Phosphate
58 mm, 2-1/2 in, 24 mm, 1-3/8 in, 3-3/8 in
8-Point, 7-Point, 6-Point, 12-Point, 4-Point
-