We have two different cutters sizes available for the regular case trimmer, one for .17 caliber and one for .22 - .45. The trimmer cutter is designed to trim cases to length and has been perfected over the last 70+ years to give you a flat square cut with little effort. Hardened to 60 Rockwell.
17 Caliber Cutter = .17 cal cases (will also trim up to .45)
Trimmer Cutter = Cases up to .490 (.22 - .45)
Note: To be used with the Stainless Steel Case Trimmer and Stainless Micrometer Case Trimmer, Power Adaptor compatable