External Hex, Internal Hex, Internal Torx
5/16 ", 1-5/16 ", 27 mm, 5/8 ", 1-3/8 "
3/4, 1-1/2, 2-1/2, 1/2, 3/8
Phosphatized, Gun-metal, Phosphated, Black Oxide, Black Phosphate
1-3/16 in, 11 mm, 3-9/16 in, 8 in, 4-1/16 in
4-Point, External Torx, 8-Point, 7-Point, 12-Point
-