Internal Hex, Internal Torx, External Hex, External Torx
11/16 ", 2-1/2 ", 4 mm, 5/8 ", 23 mm
2-1/2, 1/4, 1-1/2, 3/4, 3/8
Phosphated, Phosphatized, Gun-metal, Black Oxide, Black Phosphate
4-1/16 in, 4-1/8 in, 58 mm, 26 mm, 7/16 in
12-Point, 4-Point, 7-Point, 8-Point, 6-Point
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