Internal Hex, Internal Torx, External Hex, External Torx
5/16 ", 5/8 ", 2-1/2 ", 9 mm, 7/8 "
2-1/2, 1/2, 3/8, 1/4, 3/4
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
3/4 in, 9/16 in, 1-3/16 in, 4-3/4 in, 2-15/16 in, 15/16 in
8-Point, 12-Point, 7-Point, 4-Point, 6-Point
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