A neck size die allows the reloader to properly size the case neck for optimal bullet tension, while maintaining the fireformed dimension of the case body.Accuracy is increased when the case body closely fits into the chamber.The neck size die includes a decapping rod and steel expander button.This model is for 6.5 creedmoor.Type: Neck Sizer DieCaliber: 6.5 CreedmoorDie Type: Neck SizerIn Set: 1