Internal Hex, Internal Torx, External Hex
2-1/2 ", 10 mm, 6 mm, 5/8 ", 1-3/8 "
1-1/2, 2-1/2, 1/2, 3/8, 1/4
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
3-3/4 in, 3-9/16 in, 8 in, 4-1/16 in, 3/4 in, 9/16 in
6-Point, 4-Point, 8-Point, 12-Point, 7-Point
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