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