Product details IRWIN POWER GRIP SCREW EXTRACTOR SET Power-Grip 8 mm-13 mm Bolt Extractor Set by Irwin®. 7 Pieces. If you're faced with a broken bolt or screw, this product will help you remove it quickly and with minimum effort. It is manufactured from extremely durable high-grade material that withstands everyday wear and tear, so you can use it on a regular basis for many decades to come. Applications Built to remove softer studs, bolts or screws Perfectly sized for ease of use Made from high-grade material Well designed for more gripping power.