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