Internal Hex, Internal Torx, External Hex
2-1/2 ", 4 mm, 6 mm, 9 mm, 1-3/8 "
1-1/2, 1, 3/4, 2-1/2, 3/8
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
2-11/16 in, 26 mm, 32 mm, 8 in, 4-1/16 in
4-Point, 8-Point, 7-Point, 6-Point, 12-Point
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