Designed for the RCBS MatchMaster Precision Case Trimmer, these 3-Way Cutter Heads come set up and ready for the caliber of your choice. Trim, deburr, and chamfer with adjustable carbide blades and the included pilot. Machined to the highest standards from 416 stainless steel and custom finished for durability. Available as assembled cutter heads with .22, .24, .25, .26, .27. .28 and .30 calibers pilots included, or as a cutter head without pilot. A .338 pilot is also available. Note: Not for use in other RCBS trimmers, such as the Trim Pro series.