Easily removes 7/16-Inch broken bolts and screwsUse 15/64-Inch left handed drill bit to drill hole this will help loosed bitIdeal for thin wall extractionsWill not spread the wall as it extracts
Square Flute Screw Extractors are used when a screw or bolt has been broken off while still in the fastening hole.
Brand: Century Drill & Tool, Model: 73203, Size: #3