Internal Hex, Internal Torx, External Hex
5/16 ", 5/8 ", 2-1/2 ", 4 mm, 8 mm
1/2, 2-1/2, 1-1/2, 1, 3/4
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
4-1/8 in, 3/4 in, 9/16 in, 4-3/4 in, 2-1/2 in, 17 mm
External Torx, 7-Point, 6-Point, 12-Point, 8-Point
-