External Hex, Internal Hex, Internal Torx, External Torx
2-1/2 ", 7 mm, 8 mm, 5/8 ", 7/8 "
1/4, 2-1/2, 3/8, 1/2, 3/4
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
3-9/16 in, 1-7/8 in, 8 in, 1-3/4 in, 17 mm
4-Point, 7-Point, 8-Point, 12-Point, 6-Point
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