The Lee Custom Over-Run Bullet Sizer & Punch is an essential tool for reloading, offering precise sizing of cast bullets and the ability to seat and crimp gas checks for enhanced performance. This tool is designed to work with the Breech Lock Bullet Sizer Kit and fits any Breech Lock-enabled reloading press. To make full use of the kit, Lee Liquid Alox, a reloading press and the Breech Lock Loading Kit are required, each sold separately. This combination ensures a seamless and efficient reloading process, delivering consistent and high-quality results with every use.