Designed for Lyman’s Universal Trimmer and AccuTrimmer. Provides the user with a simple-to-operate tool that guarantees neck wall thickness and outside neck diameter. Essential for case reforming. Improves accuracy. Adjustable cutter (for length of cut and rate of feed) removes minimum brass to attain uniformity. Cutter blade can be adjusted to any diameter from .195” to .405”. Comes with two extra cutting blades. Includes six mandrel Multi-Pack (for .22, .243, .25, .270, 7mm, and .30 calibers). Not adaptable to Power Trimmer.