Internal Hex, Internal Torx, External Hex
2-1/2 ", 4 mm, 30 mm, 1-1/8 ", 21 mm
1/2, 2-1/2, 1-1/2, 3/8, 3/4
Phosphatized, Gun-metal, Phosphated, Black Oxide, Black Phosphate
1-1/4 in, 28 mm, 70 mm, 3/4 in, 9/16 in, 39 mm
4-Point, 12-Point, 8-Point, 7-Point, 6-Point
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