Internal Hex, Internal Torx, External Hex
2-1/2 ", 4 mm, 7/16 ", 20 mm, 5/8 "
1/4, 1-1/2, 1/2, 2-1/2, 3/8
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
8 in, 4-1/16 in, 58 mm, 3/4 in, 9/16 in, 39 mm
12-Point, 6-Point, 7-Point, 8-Point, 4-Point
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