Internal Hex, Internal Torx, External Hex
1-5/16 ", 20 mm, 1 ", 1-3/8 ", 5/8 "
1/2, 1-1/2, 2-1/2, 3/8, 3/4
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
3/4 in, 9/16 in, 39 mm, 5/8 in, 13 mm, 11/16 in
External Torx, 6-Point, 4-Point, 7-Point, 8-Point
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