Internal Hex, Internal Torx, External Hex
5/16 ", 5.5 mm, 1-3/8 ", 5/8 ", 21 mm
3/8, 2-1/2, 3/4, 1-1/2, 1/4
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
7/16 in, 28 mm, 8 in, 16 mm, 58 mm
12-Point, 4-Point, 7-Point, 6-Point, 8-Point
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