External Hex, Internal Hex, Internal Torx
11/16 ", 2-1/2 ", 4 mm, 5/8 ", 21 mm
2-1/2, 1/2, 1-1/2, 3/8, 3/4
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
32 mm, 8 in, 28 mm, 39 mm, 13/16 in
8-Point, 4-Point, 12-Point, 6-Point, 7-Point
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