Internal Hex, Internal Torx, External Hex
5/16 ", 7/32 ", 2-1/2 ", 4 mm, 6 mm
1/2, 3/4, 3/8, 2-1/2, 1-1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
8 in, 4-1/16 in, 58 mm, 39 mm, 13/16 in
12-Point, 6-Point, 4-Point, 8-Point, 7-Point
-