Heat treated carbon steel construction. Black oxide finish resists corrosion. 12-Piece long arm (SAE): 0.05, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8-inch. 13-Piece short arm (Metric): 1.3, 1.5, 2, 2.5, 3, 4, 5, 5.5 , 6 , 7, 8, 10mm. Complete with storage and organizer pouch. |