Internal Hex, Internal Torx, External Hex, External Torx
4 mm, 5/16 ", 5/8 ", 1 ", 1-3/8 "
1-1/2, 1/4, 3/4, 1/2, 2-1/2
Phosphatized, Phosphated, Gun-metal, Black Phosphate, Black Oxide
4-1/16 in, 39 mm, 2-7/16 in, 17 mm, 5/16 in
8-Point, 12-Point, 7-Point, 4-Point, 6-Point
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