A robust screw extractor set manufactured in Chrome Molybdenum. Sizes: M3/6 (1/8"-1/4") M6/8 (1/4"-5/16") M8/11 (5/16"-7/16") M11/14 (7/16"-9/16") M14/18 (9/16"- 3/4") M18/25 (3/4"-1").