External Hex, Internal Hex, Internal Torx
4 mm, 9 mm, 15/16 ", 1-3/8 ", 7/8 "
2-1/2, 3/8, 1/4, 1-1/2, 1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
43 mm, 4-3/4 in, 39 mm, 5/8 in, 11/16 in
12-Point, 8-Point, 7-Point, 6-Point, 4-Point
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