... , #4, #5, 3.Usage:Remove broken screws,bolts,studs screw extractor setSize: #1, #2, #3, #4, #5,Usage: Remove broken screws ... ,bolts and studs without damaging bolt or hole threads.Extractors have round ... drills(HSS drills, masonry drills, wood flat bits,auger bits and so on),and other tools.Also we recommend other products,