External Hex, Internal Hex, Internal Torx
1-1/8 ", 5/8 ", 5.5 mm, 1 ", 1-3/8 "
3/8, 1-1/2, 3/4, 2-1/2, 1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
3-3/4 in, 8 in, 16 mm, 39 mm, 2-15/16 in
12-Point, 6-Point, 7-Point, 8-Point, 4-Point
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