The E-ZEE TRIM case trimming system allows the user to trim cases by hand or with a power attachment (included) to precise pre-set length - no adjustment of measuring needed. The trimmer comes with a case locking device, cutter, trim-to-length pilot, cutter head and both hand and power trimming adapters. The trimmer works with any standard shellholder including Lyman, Redding, RCBS, Hornady & Lee Precision.