The case holder holds the case for trimming, primer pocket reaming, neck reaming and deburring with our Uniform Deburring Tool. 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, much like a chamber of a firearm. The Case Holders are precisely manufactured for consistent results and repeatability. 
* The FIRED Case Holders are for Neck Sized Cases. * But, if we DO NOT make a "New Case" holder for your caliber then this will work for all cases (NEW, FIRED OR FULL LENGTH RESIZED). 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, 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, neck reaming, and deburring with the L.E. Wilson Uniform Deburring tool (sold separately). Case Holders listed will work with all cases: fired, new and resized.