The Forster Inside Neck Reamer is designed to remove excess brass from case neck walls and is made from high-grade, wear-resistant tool steel.
It is sized .0025" to .003" over the maximum bullet diameter and features a staggered tooth design for a smooth, chatter-free cut.
Neck reaming should be done after firing with a full load and before neck or full-length sizing, and is necessary when a bullet does not slide easily into a fired, unsized case neck.