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