External Hex, Internal Hex, Internal Torx
2-1/2 ", 5/16 ", 9 mm, 1-5/16 ", 21 mm
3/8, 3/4, 1/4, 1-1/2, 1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
3-9/16 in, 30 mm, 8 in, 4-1/8 in, 39 mm
External Torx, 7-Point, 4-Point, 12-Point, 6-Point
-