Lee Precision has been making high quality reloading equipment for over 50 years. Lee Carbide Sizing Dies are great for straight wall cartridge cases. The solid carbide insert is ground to a special contour that will not leave a belt mark on the cartridge case. Carbide dies require no lubricant and will actually burnish the case to improve the finish. Carbide dies will last a lifetime and not wear out. Shellholder sold separately. Notes: No lubrication required