External Hex, Internal Hex, Internal Torx
2-1/2 ", 4 mm, 9 mm, 1-1/8 ", 5/8 "
3/8, 3/4, 1-1/2, 2-1/2, 1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
4-1/16 in, 16 mm, 70 mm, 39 mm, 2-1/2 in
4-Point, 7-Point, 12-Point, 8-Point, 6-Point
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