IRWIN SPIRAL FLUTE SCREW EXTRACTOR #6
This Spiral Flute Screw Extractor is designed to remove broken studs, bolts, socket screws and fittings. It has aggressive left hand spiral design for extra gripping power. These spiral flutes are designed to embed themselves deeper into the metal as you turn the tool, so as the fastener resistance increases, the extractor's grip increases. The extractor size and recommended drill bit size are engraved on each tool.