External Hex, Internal Hex, Internal Torx
5/16 ", 5.5 mm, 5/8 ", 15/16 ", 1-3/8 "
1/2, 3/8, 2-1/2, 1-1/2, 3/4
Phosphatized, Phosphated, Gun-metal, Black Oxide, Black Phosphate
15/16 in, 8 in, 4-1/16 in, 58 mm, 3-3/8 in
6-Point, 7-Point, 4-Point, External Torx, 8-Point
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