Internal Hex, Internal Torx, External Hex
2-1/2 ", 4 mm, 25 mm, 5.5 mm, 5/8 "
3/4, 1-1/2, 1/4, 1/2, 3/8
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
2-1/4 in, 8 in, 58 mm, 3/4 in, 9/16 in, 17 mm
8-Point, 6-Point, 4-Point, 7-Point, 12-Point
-