External Hex, Internal Hex, Internal Torx, External Torx
2-1/2 ", 4 mm, 9/16 ", 5.5 mm, 7/8 "
1/2, 1-1/2, 1, 2-1/2, 3/4
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
3-9/16 in, 8 in, 11 mm, 58 mm, 1-3/8 in
12-Point, 6-Point, 7-Point, 8-Point, 4-Point
-