Features and Benefits: 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 the metal as you turn the tool, so as the fastener resistance increases, the extractor's grip increases; Extractor size and recommended drill bit size are etched on each tool; Set includes metal index case; Set includes spiral flute screw extractors in sizes: Ex-1, Ex-2, Ex-3, Ex-4, Ex-5, and drill bits in sizes: 5/64", 7/64", 5/32", 1/4" and 19/64".
eBay