Internal Hex, Internal Torx, External Hex
2-1/2 ", 4 mm, 5/8 ", 23 mm, 1-3/8 "
2-1/2, 3/4, 1-1/2, 3/8, 1
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
4-1/16 in, 4-1/8 in, 1-1/8 in, 58 mm, 1-1/2 in
6-Point, 4-Point, 7-Point, 12-Point, 8-Point
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