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