External Hex, Internal Hex, Internal Torx, External Torx
5.5 mm, 12 mm, 2-1/2 ", 4 mm, 5/8 "
1/2, 1/4, 1-1/2, 1, 2-1/2
Phosphated, Phosphatized, Gun-metal, Black Phosphate, Black Oxide
1-9/16 in, 1-11/16 in, 1-5/16 in, 8 in, 21 mm
6-Point, 12-Point, 7-Point, 4-Point, 8-Point
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