The Universal Carbide Case Trimmer is a heavy-duty, cast-iron constructed case trimming tool designed for serious reloaders who demand precise case lengths for pinpoint accuracy and smooth, reliable functioning cartridges. The secret behind this hard-working case trimmer is simple-it uses a Carbide Cutter Head that holds a diamond-sharp edge to maintain balanced dimensions and a longer-than-average service life, making it ideal for volume reloaders. This replaceable cutter head accepts all Lyman pilots. This unit packs a high speed drive and a safety guard for added protection. Lyman's patented Universal Chuckhead can handle any case cutting job from .17 caliber to .458 caliber with n Mfg: Lyman