Internal Hex, Internal Torx, External Hex
2-1/2 ", 1/4 ", 4 mm, 5.5 mm, 1-3/8 "
3/4, 1/4, 1/2, 2-1/2, 3/8
Phosphatized, Phosphated, Gun-metal, Black Phosphate, Black Oxide
E7, 1-11/16 in, 8 in, 3/4 in, 9/16 in, 2-7/16 in
External Torx, 4-Point, 8-Point, 7-Point, 6-Point
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