Internal Hex, Internal Torx, External Hex, External Torx, 6-Point
2-1/2 ", 8 mm, 25 mm, 9/16 ", 1-3/8 "
1/2, 1/4, 3/4, 3/8, 1-1/2
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
21 mm, 4-1/16 in, 1-1/4 in, 3/4 in, 9/16 in, 2-1/2 in
8-Point, 7-Point, 12-Point, 4-Point
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