Internal Hex, Internal Torx, External Hex, External Torx
5/16 ", 2-1/2 ", 4 mm, 1-5/16 ", 5/8 "
2-1/2, 1/2, 1-1/2, 3/4, 3/8
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
4-1/16 in, 33 mm, 4-3/4 in, 24 mm, 1-1/4 in
8-Point, 6-Point, 4-Point, 12-Point, 7-Point
-