Check the listing for details. L.E. Wilson Replacement Trimmer Steel Cutter 17-45 Cal. Condition: New. Listed at 28.95 USD. Photo is for reference only. The cutters now come packaged in clear plastic tubes, rather than the box show. This listing is for the steel standard 17-45 Cal replacement cutter. Wilson offers 3 different steel replacement cutters for their trimmers #1 .17-.45 Cal - This can be used in all standard trimmers only which is this listing #2 .22-.45 Cal - This can be used in all standard trimmers only #3 .490-.605 Cal – This is for the 50 BMG trimmer only The regular case trimmer cutter trims .17 to .45 caliber cases. 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.Trimmer Cutter = Cases up to .490 (.17 - .45)Note: To be used with the Stainless Steel Case Trimmer and Stainless Micrometer Case TrimmerPower Adapter compatible