The popular Trim Pro case trimmer has been improved with the addition of a spring-loaded universal shell holder. The spring-loaded shell holder securely locks the case in alignment with the cutter. Note: Cases with rim diameters larger than .625-inch must be trimmed on the 90352 High Capacity Trimmer. Case neck Pilots are required to center the case mouth to the cutter head not included sold separately. - Designed for .001-inch accuracy - Coarse and fine trim length adjustments - Fine adjustment bushing features .001-inch micrometer markings - Spring-loaded shell holder accommodates case head diameters from .250-inch to .625-inch rims - Case fit is from the 5.7mmx28 to .338 Lapua Magnum