#7 Spiral Screw Extractor

#7 Spiral flute screw extractor. Removes bolt or screw size 7/8"-1-1/8". Removes pipe 1/2". Use drill bit size 17/32", suggested left hand cobalt drill bits. Screw extractors are used when a screw or bolt has broken off while still in the fastening hole. Aggressively removes bolts and screws.