The Draper Expert 1/2" Drive Heavy Duty Stud Extractor is a professional-grade tool designed for removing broken or seized studs from engine blocks, cylinder heads and other mechanical assemblies. This heavy-duty stud extractor features a robust construction with the spindle and body manufactured from quality carbon steel, chrome plated and polished for corrosion resistance and durability. The gear mechanism is precision-engineered from chrome molybdenum steel with a chemically blackened finish, providing the strength needed for demanding extraction work. With a capacity range of 6-19mm, this 1/2" square drive stud extractor is ideal for engine overhaul applications and general mechanical repairs. The tool works by gripping the exposed stud firmly and using leverage to extract it without damaging the surrounding threads or components. This stud extractor is particularly suited to professional mechanics, automotive technicians and engineers working on engine rebuilds or repair projects