Internal Hex, Internal Torx, External Hex
2-1/2 ", 1 ", 4 mm, 1-3/8 ", 1-1/4 "
1, 2-1/2, 1/2, 3/4, 1-1/2
Phosphatized, Gun-metal, Phosphated, Black Oxide, Black Phosphate
4-1/8 in, 3/4 in, 9/16 in, 39 mm, 1-3/8 in, 13 mm
4-Point, External Torx, 7-Point, 6-Point, 12-Point
-