The Lee Case Trimmer and Cutter is designed to be used with only Lee Case Length Gauges and Shellholders (sold separately). This handy tool is made from hardened steel, trimming cases to correct SAAMI specifications has never been easier. The threaded shaft allows the setup to be used with in any case prep station which will accept 8-32 threads. Notes: For use with case prep stations that can accept 8-32 threads