Internal Hex, Internal Torx, External Hex
5/8 ", 2-1/2 ", 4 mm, 5/16 ", 23 mm
1, 1-1/2, 2-1/2, 3/4, 1/4
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
1-15/16 in, 8 in, 4-1/16 in, 5/8 in, 2-1/2 in
8-Point, External Torx, 12-Point, 6-Point, 7-Point
-