So I bought this Unibit to replace the one I lost. I saw reviews about the shank, still get it. When he arrived he immediately went to work drilling holes in electrical boxes for 1 inch plugs. It worked great. It cut metal with ease and worked slowly for 4 days and the shaft is fine. I'm glad I bought it. To update. I bought it in May 2021. This week it finally broke on the shaft. July 2021