Internal Hex, Internal Torx, External Hex, 6-Point
9/32 ", 5/8 ", 2-1/2 ", 11 mm, 1-1/8 "
2-1/2, 3/8, 3/4, 1/4, 1-1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
3-3/4 in, 3-9/16 in, 8 in, 58 mm, 39 mm
8-Point, External Torx, 4-Point, 7-Point, 12-Point
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