External Hex, Internal Hex, Internal Torx
11/16 ", 2-1/2 ", 4 mm, 7 mm, 5/16 "
1-1/2, 3/8, 3/4, 1/2, 2-1/2
Phosphatized, Phosphated, Gun-metal, Black Phosphate, Black Oxide
3-9/16 in, 7/8 in, 8 in, 39 mm, 2-1/2 in
8-Point, External Torx, 7-Point, 12-Point, 6-Point
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