Internal Hex, Internal Torx, External Hex
2-1/2 ", 6 mm, 5/16 ", 1-5/16 ", 20 mm
2-1/2, 1-1/2, 3/8, 1/2, 3/4
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
8 in, 1-1/4 in, 13 mm, 4-3/4 in, 39 mm
6-Point, External Torx, 12-Point, 4-Point, 7-Point
-