External Hex, Internal Hex, Internal Torx
2-1/2 ", 7/16 ", 8 mm, 5/16 ", 5/8 "
3/4, 2-1/2, 1-1/2, 1/2, 3/8
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
2-1/4 in, 8 in, 19 mm, 7/8 in, 3-3/8 in
8-Point, 4-Point, 6-Point, 7-Point, 12-Point
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