External Hex, Internal Hex, Internal Torx
1-5/16 ", 9/16 ", 5/8 ", 1-3/8 ", 21 mm
1-1/2, 1/2, 1/4, 3/4, 2-1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
E7, 3-9/16 in, 8 in, 4-1/16 in, 39 mm
4-Point, 7-Point, 6-Point, 12-Point, 8-Point
-