The Trim Pro case trimmer has been improved by adding a spring-loaded universal case shell holder that securely locks the case in alignment with the cutter. Engineered for accuracy within .001". Coarse and fine trim adjustments. Accommodates case-head diameters from .250" to .625" rims. Trim cases with a few turns of the handle. The universal shell holder keeps cases locked in place and aligned with the cutter. It works with standard pilots and features a micrometer fine-adjustment bushing for setting exact trim length. Made of die-cast metal with hardened cutting blades for a lifetime of use. Kit includes case trimmer pilots: .22, .24, .25, .27, .28, .30, .35, .44 and .45.