Screw Extractor Set 8pce
- For removing damaged studs, screws and bolts
- Made from chrome molybdenum steel
- Aggressive left-hand spiral design for extra gripping power
- Set contains 1/8"-1/4"(M3-M6), 1/4"-5/16"(M6-M8), 5/16"-7/16"(M8-M11), 7/16"-9/16"(M11-M14), 9/16"-3/4"(M14-M18), 3/4"-1"(M18-M25),1"-1.1/8"(M25-M28), 1.1/8"-1.1/4"(M28-M32)
To use, drill a small hole in the centre of the screw & insert the correct size extractor. The extractor's thread is in the opposite direction to a conventional screw thread so when the extractor is tightened in an anti-clockwise direction it begins to loosen the screw & remove it from the hole.