Simply thread a Hornady® Lock‑N‑Load® Conversion Kit into your RCBS® Rock Chucker or other reloading press using a 1¼"‑12 thread, and you're ready to start using the Lock‑N‑Load® System.

It's the easiest way to get the most out of your reloading press. These bushings let you take advantage of Hornady's® Lock‑N‑Load® technology even if your press is from another brand.

The Lock‑N‑Load® Conversion Kit includes three Lock‑N‑Load® bushings and one conversion bushing.