The Lee Custom Over-Run Bullet Sizer & Punch is an essential tool for resizing cast bullets, ensuring precision and consistency in your reloading process. This tool also effectively seats and crimps gas checks, providing a complete solution for optimal bullet performance. Designed for use with the Breech Lock Bullet Sizer Kit, it fits seamlessly with any Breech Lock-enabled reloading press. To fully utilize this kit, you'll need Lee Liquid Alox, a reloading press and the Breech Lock Loading Kit, each sold separately. This combination of components is ideal for reloaders who seek reliability, efficiency and quality results.