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