External Hex, Internal Hex, Internal Torx, External Torx
2-1/2 ", 4 mm, 9 mm, 5.5 mm, 15/16 "
1/2, 2-1/2, 1, 1-1/2, 3/8
Phosphatized, Phosphated, Gun-metal, Black Phosphate, Black Oxide
3-3/4 in, 3-9/16 in, 3/4 in, 8 in, 1-3/8 in
6-Point, 7-Point, 8-Point, 4-Point, 12-Point
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