External Hex, Internal Hex, Internal Torx
5/16 ", 26 mm, 1-1/2 ", 1-1/8 ", 5.5 mm
1/2, 1/4, 3/8, 2-1/2, 1-1/2
Phosphatized, Phosphated, Gun-metal, Black Phosphate, Black Oxide
3/4 in, 9/16 in, 4-3/4 in, 17 mm, 15/16 in, 1-1/2 in
8-Point, 4-Point, 7-Point, 6-Point, 12-Point
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