Internal Hex, Internal Torx, External Hex
1-5/16 ", 5.5 mm, 5/8 ", 23 mm, 1-3/8 "
1-1/2, 1, 2-1/2, 3/4, 1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
1-1/4 in, 4-1/8 in, 3/4 in, 9/16 in, 7/16 in, 17 mm
6-Point, 4-Point, 7-Point, 12-Point, 8-Point
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