Internal Hex, Internal Torx, External Hex
1 ", 5/16 ", 5.5 mm, 1-3/8 ", 21 mm
3/4, 2-1/2, 1/2, 1-1/2, 3/8
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
28 mm, 36 mm, 8 in, 2-7/16 in, 5/16 in
4-Point, External Torx, 8-Point, 6-Point, 7-Point
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