Internal Hex, Internal Torx, External Hex, External Torx
2-1/2 ", 4 mm, 9 mm, 5/8 ", 1-3/8 "
1/4, 3/4, 2-1/2, 1-1/2, 1
Phosphatized, Gun-metal, Phosphated, Black Phosphate, Black Oxide
4-1/16 in, 28 mm, 1-1/4 in, 58 mm, 7/16 in
6-Point, 12-Point, 4-Point, 7-Point, 8-Point
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