Internal Hex, Internal Torx, External Hex, External Torx
2-1/2 ", 10 mm, 4 mm, 25 mm, 35 mm
1-1/2, 2-1/2, 3/8, 1/2, 3/4
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
4-1/16 in, 28 mm, 39 mm, 2-15/16 in, 3-3/8 in
8-Point, 12-Point, 4-Point, 7-Point, 6-Point
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