RCBS #90283. The RCBS Trim Pro Case Trimmer 3-Way cutter is a unique three blade head configuration that trims cases like a standard cutting tool but also chamfers and deburrs the case at the same time saving valuable time in the reloading process. Will attach to RCBS case trimmers and includes the cutter and caliber specific pilots. Fits: RCBS Case Trimmers. 7mm Caliber 3-Way Cutter.