6pcs Broken Screw Extractors for Steel, Studs, Broken and Damaged Bolts 4mm-22mm

This set is designed to remove damaged, rusted, or stripped screws, studs, bolts, and staples. The GCR15 tool steel extractors have a left-hand spiral flute designed for extra gripping power. There are a total of 6 extractors of different sizes for screws from 4mm to 22mm (diameter). Easy to use: first drill a hole in the center of the broken screw, then use the appropriate extractor to remove the screw. You can use an adjustable wrench to hold the extractor firmly while removing the screw.