The Redding NxGen Pro Series Carbide 3-Die Set is designed for use in progressive presses. Set includes Carbide Sizing/Decapping Die, Bullet Seating Die (designed for bullet seating only - no crimping feature) and a Profile Crimp Die (For cartridges that headspace on the case mouth, a taper crimp die is substituted). All dies in the set have a special large radius at the mouth for easy case entry, a necessary feature for progressive machines. Shellholder sold separately. Carbide dies require no case sizing lubricant.