L.E. Wilson Trimmer Case Holder 17 Tactical and 20 Tactical and 204 Ruger (Fired Case) The L.E. Wilson Trimmer Case Holder provides the ultimate accuracy and uniformity for trimming your cases. The unique design of the case holder supports the case body and much like a chamber of a firearm. The Case Holders are precisely manufactured for consistent results and repeatability. The case holders can also be used for primer pocket reaming and neck reaming and and deburring with the L.E. Wilson Uniform Deburring tool (sold separately). Case Holders listed for fired cases will work on fired cases only. Holders listed for new cases will work on new and resized cases only. Technical Information: -Material: Steel -Fits: L.E. Wilson Case Trimmer -Use: For fired cases and or new and resized cases To use and simply place the case in the trimmer case holder and tap the case head on a firm surface and and place in the trimmer. The case is easily removed by tapping the case mouth..