Internal Hex, Internal Torx, External Hex
1-5/16 ", 16 mm, 15/16 ", 1-3/8 ", 5/8 "
1/4, 1/2, 2-1/2, 1-1/2, 3/8
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
36 mm, 8 in, 58 mm, 4-3/4 in, 5/16 in
8-Point, 6-Point, 12-Point, 7-Point, 4-Point
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