Auger Retrievers/Internal Fishing Tools are used to retrieve Hollow Stem Augers lost down-hole. Manufactured for specific auger I.D.s, all of our fishing tools feature heat-treated, case-hardened threads which can cut into the I.D. of both standard and heavy duty tapered augers. Mills Machine stocks threaded ends and tool joints to give fast response to your needs (non-standard tool joints are also readily available).