Internal Hex, Internal Torx, External Hex
1-5/16 ", 18 mm, 1-3/8 ", 5/8 ", 21 mm
2-1/2, 1/2, 1-1/2, 1, 3/8
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
58 mm, 4-3/4 in, 39 mm, 13 mm, 1-3/8 in
8-Point, 4-Point, External Torx, 6-Point, 7-Point
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