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