Internal Hex, Internal Torx, External Hex, External Torx
4 mm, 7/16 ", 9 mm, 9/16 ", 1-3/8 "
3/4, 1/2, 1, 2-1/2, 1-1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
8 in, 13/16 in, 2-1/2 in, 24 mm, 1-3/8 in
12-Point, 8-Point, 7-Point, 4-Point, 6-Point
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