The ideal tool for fast, easy removal of excessive neck material or variations in case thickness. The inside and outside of the case neck are turned simultaneously. Requires caliber specific Case Neck Turner Pilot-Reamer (sold separately). This tool is suggested for use with the RCBS Trim Pro Manual or Rotary Caste Trimmer-2, not the Trim Pro with the power unit attached. Adaptable for almost all 1/2" shaft case trimmers.