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