Kawasaki 840502 Screw Extractor Set, 5-Piece Offically licensed by Kawasaki Made using the highest quality standards Tested for durability For use in a hand tap wrench Screw extractors are used when a bolt or screw has broken off while still in fastening hole Idea for thin wall extractions Will not spread the wall as it extracts 5 Piece set includes #1, #2, #3, #4 and #5