External Hex, Internal Hex, Internal Torx
6 mm, 15/16 ", 1-3/8 ", 7/8 ", 1-1/4 "
2-1/2, 3/4, 1-1/2, 1, 3/8
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
E7, 36 mm, 8 in, 58 mm, 3/4 in, 9/16 in
8-Point, 12-Point, 7-Point, 6-Point, 4-Point
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