Internal Hex, Internal Torx, External Hex
2-1/2 ", 4 mm, 7/16 ", 5/8 ", 1-3/8 "
1/2, 2-1/2, 3/8, 1/4, 1-1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
13/16 in, 7/16 in, 2-1/2 in, 11/16 in, 1-3/8 in
12-Point, 7-Point, 4-Point, 8-Point, 6-Point
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