Internal Hex, Internal Torx, External Hex
4 mm, 5/16 ", 5.5 mm, 1-3/8 ", 1-1/4 "
2-1/2, 3/8, 1/4, 1/2, 1-1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
28 mm, 19 mm, 43 mm, 26 mm, 5/16 in
4-Point, 7-Point, 6-Point, 8-Point, 12-Point
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