Broken off screws are easy to extract when you can remove the material from around them. Using a drill press or a power drill with a pre-bored guide block, these hollow, saw tooth edged extractors bore a clean hole around the broken screw without damaging the surrounding surface. Three double ended size for #8, #10 & #12 screws, 2" Long.
(MJ-833A) 1/4" Screws Extractor
(MJ-833B) 5/16" Screws Extractor
(MJ-833C) 3/8" Screws Extractor