Internal Hex, Internal Torx, External Hex
9/16 ", 5.5 mm, 11 mm, 1-3/8 ", 7/8 "
1/2, 2-1/2, 1-1/2, 3/8, 1/4
Phosphatized, Phosphated, Gun-metal, Black Phosphate, Black Oxide
4-3/8 in, 3/4 in, 9/16 in, 5 mm, 8 in, 17 mm
12-Point, 7-Point, 6-Point, 4-Point, 8-Point
-