#4 Spiral Screw Extractor

#4 spiral flute screw extractor. Removes bolt or screw size 9/32"-3/8". Removes pipe 1/8". Use drill bit size 1/4", 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.