External Hex, Internal Hex, Internal Torx
3/16 ", 2-1/2 ", 4 mm, 1-5/16 ", 5/8 "
1, 2-1/2, 3/4, 3/8, 1-1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
8 in, 28 mm, 58 mm, 3/4 in, 9/16 in, 2-1/2 in
12-Point, 6-Point, 4-Point, External Torx, 7-Point
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