External Hex, Internal Hex, Internal Torx, External Torx
5/16 ", 5/8 ", 23 mm, 1-1/4 ", 21 mm
1/2, 1-1/2, 3/4, 2-1/2, 3/8
Phosphatized, Gun-metal, Phosphated, Black Oxide, Black Phosphate
4-3/4 in, 39 mm, 13 mm, 5/16 in, 3-3/8 in
12-Point, 8-Point, 6-Point, 7-Point, 4-Point
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