Hanson 52208 Screw Ext Multi Spline 11/32, for Tap Die Extraction Screw extractor set is designed to remove broken studs, bolts, socket screws and fittings Screw extractors are ideal for high-torque applications Each IRWIN screw extractor has an aggressive left-hand spiral design for extra gripping power 11/32-inch recommended drill bit diameter 1/2" hex head and 5/8" bolt diameter