Internal Hex, Internal Torx, External Hex
1-1/8 ", 5/8 ", 9/16 ", 5.5 mm, 1 "
3/4, 2-1/2, 3/8, 1, 1-1/2
Phosphated, Phosphatized, Gun-metal, Black Oxide, Black Phosphate
56 mm, 3/4 in, 9/16 in, 1-5/16 in, 8 in, 39 mm
12-Point, External Torx, 6-Point, 7-Point, 8-Point
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