External Hex, Internal Hex, Internal Torx, External Torx
2-1/2 ", 4 mm, 7/16 ", 9/16 ", 5/8 "
3/8, 1/4, 1-1/2, 3/4, 1/2
Phosphatized, Phosphated, Gun-metal, Black Phosphate, Black Oxide
13 mm, 4-1/8 in, 4-3/4 in, 39 mm, 5/16 in
12-Point, 7-Point, 6-Point, 8-Point, 4-Point
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