IBX1651 Features: * Contents: EX-1 - EX-9 * Designed to remove broken studs, bolts, socket screws and fittings * Aggressive left hand spiral design for extra gripping power * Spiral flutes are designed to embed themselves deeper into metal as you turn tool, so as fastener resistance increases, extractor"s grip increases * Extractor size and recommended drill bit size are etched on each tool