Specially ground carbide blades trim your cases to length and chamfer the inside and outside of the case mouths. Precise chamfered edges have a 14° angle on the inside and 30° angle on the outside. The 3-In-1 easily installs on the cutter shaft of your Forster Case Trimmer. Available in models to fit .224, .243(6mm), or .308 caliber cartidges... A very precise, satisfying tool for reloaders! See our Forster Products Page for additional information.