Hornady Case Prep, Trimmer & Accessories Pilot #23 .475/.480This pilot is needed for trimming caliber specific brass cases in a Hornady Cam-Lock Case Trimmer or original Hornady Case Trimmer. Technical Information:Fits: Hornady, Redding or Forster Case Trimmers Function: .475, .480 Diameter (475 Caliber) Pilot Material: Steel