Lee Precision has produced a case trimming tool system that is certain to quickly, and efficiently speed up your case trimming process, without sacrificing precision. Each die is made to hold brass cases securely while the cutter (sold separately) is turned ensuring that case mouths are cut square. Each die is threaded 7/8-14 to work in all reloader presses that accept standard reloading dies. Quick Trim Die Bodies are made for the most popular calibers on the market. Specifications and Features: Die Size: Standard 7/8-14 threaded die Requires Shell holder Includes Plastic Die Box