Mec is known for making high-quality shotshell presses that work great for all levels of shotshell reloaders from beginners just learning this skill to advanced loaders who have been reloading for decades. This die set is designed for reloader that want to convert their MEC 600 Jr. Mark 5 to a different gauge and includes all necessary parts. Kit Includes: K.O. BushingResize RingDeprime PunchReprime PunchWad GuideRammer TubeStar Crimp HeadCam Crimp AssemblyShell HolderDrop TubeNotes: Complete instructions included for installation of die setAll die sets adjustable to handle up to a 3" shell