External Hex, Internal Hex, Internal Torx
12 mm, 2-1/2 ", 4 mm, 8 mm, 1-5/16 "
3/8, 2-1/2, 3/4, 1/4, 1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
1-11/16 in, 8 in, 21 mm, 1-1/4 in, 4-3/4 in
6-Point, 7-Point, 4-Point, 8-Point, 12-Point
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