External Hex, Internal Hex, Internal Torx
6 mm, 7/16 ", 5/8 ", 5.5 mm, 1-3/8 "
2-1/2, 3/8, 1, 1-1/2, 1/4
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
3-3/4 in, 8 in, 13 mm, 33 mm, 17 mm
8-Point, 4-Point, 7-Point, 6-Point, 12-Point
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