Internal Hex, Internal Torx, External Hex, 6-Point
5/16 ", 20 mm, 5/8 ", 15/16 ", 1-3/8 "
2-1/2, 1/2, 1/4, 3/4, 3/8
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
3-3/4 in, 8 in, 28 mm, 58 mm, 13 mm
External Torx, 12-Point, 4-Point, 7-Point, 8-Point
-