Internal Hex, Internal Torx, External Hex
3/16 ", 2-1/2 ", 4 mm, 5/8 ", 1-3/8 "
3/4, 1-1/2, 1, 1/4, 2-1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
3/4 in, 8 in, 21 mm, 3/4 in, 9/16 in, 4-3/4 in
12-Point, 7-Point, 8-Point, 4-Point, 6-Point
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