External Hex, Internal Hex, Internal Torx
1-5/16 ", 16 mm, 5.5 mm, 1-3/8 ", 1-1/4 "
1/4, 3/8, 3/4, 1-1/2, 1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
4-1/8 in, 58 mm, 39 mm, 24 mm, 17 mm
8-Point, External Torx, 6-Point, 7-Point, 12-Point
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