External Hex, Internal Hex, Internal Torx
5.5 mm, 15/16 ", 1-1/4 ", 21 mm, 46 mm
2-1/2, 1-1/2, 1/2, 1, 3/8
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
3-9/16 in, 8 in, 3/4 in, 9/16 in, 39 mm, 24 mm
12-Point, 4-Point, 6-Point, 7-Point, 8-Point
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