#6 SQ Screw Extractor

#6 square flute screw extractor. Removes bolt or screw size 3/4". Removes pipe 1/2". Use drill size 15/32", left hand cobalt drill bit suggested. Screw extractors are used when a screw or bolt has broken off while still in the fastening hole. Ideal for thin wall extractions. Will not spread the wall as it extracts.