External Hex, Internal Hex, Internal Torx, External Torx
2-1/2 ", 4 mm, 5/16 ", 5.5 mm, 1-3/8 "
Phosphatized, Phosphated, Gun-metal, Black Oxide, Black Phosphate
4-1/16 in, 1-3/4 in, 3/4 in, 9/16 in, 13 mm, 2-15/16 in
12-Point, 7-Point, 4-Point, 6-Point, 8-Point
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