Lyman's Universal Carbide Case Trimmer features a premium Carbide Cutter Head with a fine grain and ultra-sharp cutting edge. The carbide head holds its edge longer, making this trimmer ideal for volume reloaders. The popular patented Universal Chuckhead handles any case from .17 caliber to .458 caliber with no collets required. The Trimmer includes nine (9) of the most popular pilots. The Lyman Universal Case Trimmer accepts all U.S. metallic cases.