General description This Draper 4-Piece Heavy-Duty Steel Stud Extractor Set (55641) is designed for removing broken or stuck fasteners. This set includes four bolt extractors specifically engineered to tackle damaged or stuck bolts, making it ideal for various DIY and home improvement projects. Technical specifications Type: Roller with 1/2" square drive or 21mm hexagon on the end of the socket Material: Hardened and tempered chrome vanadium steel Finish: Chrome plated for corrosion resistance Number of pieces: 4 Compatibility and accessories Compatible with standard 1/2" drive tools and sockets Spare extractors are available separately for replacement or additional use Installation Insert the extractor into the corresponding socket or drive tool Use appropriate torque to unscrew damaged or stuck bolts Usage Designed for removing damaged or rounded bolts and screws Suitable for use with manual or power tools that accept 1/2" drive or 21mm hex sockets Other information Packed in a