Internal Hex, Internal Torx, External Hex
2-1/2 ", 4 mm, 1-1/8 ", 5/8 ", 1-1/4 "
2-1/2, 1-1/2, 3/4, 3/8, 1
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
4-1/16 in, 3/4 in, 9/16 in, 35 mm, 5/16 in, 3-3/8 in
7-Point, 12-Point, 6-Point, 8-Point, 4-Point
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