Irwin 394100 IRWIN HANSON POWER-GRIP 7-Piece Screw Extractor Set (394100)

394100 Power-Grip™ Screw and Bolt Extractor Set - 7-Piece. Designed for use with power tools. 1/4" hex shank fits most power tools. When you are faced with a rounded-off, rusted-tight or painted-over bolt, bolt extractors will break it free. Reverse spiral flutes are designed to bite down to provide maximum gripping power. High carbon steel ensures longer life and greater durability. Universal lobular design fits all types of fasteners.