External Hex, Internal Hex, Internal Torx
4 mm, 1-1/2 ", 1-5/16 ", 5.5 mm, 9 mm
1-1/2, 2-1/2, 3/8, 3/4, 1/4
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
60 mm, E7, 11 mm, 8 in, 1-3/8 in
6-Point, External Torx, 7-Point, 8-Point, 4-Point
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