Internal Hex, Internal Torx, External Hex
5/16 ", 16 mm, 5/8 ", 1-3/8 ", 21 mm
2-1/2, 1/2, 3/8, 1/4, 1-1/2
Phosphatized, Gun-metal, Phosphated, Black Oxide, Black Phosphate
3-9/16 in, 8 in, 13/16 in, 58 mm, 39 mm
External Torx, 8-Point, 12-Point, 7-Point, 4-Point
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