Machined from 6061 Aluminum, black anodized, and finally laser engraved for a truly top notch reloading tray that will maintain its finish for years to come. Modular design features interchangeable top plates in different sizes, and the open-sided design prevents powder from getting stuck in the tray. Top plates are counterbored for positive stacking of units when not in use. If you’re looking for a loading block that’s made with as much precision as your ammunition, look no further. 50 round capacity, with a hole diameter of .600″. Will also accept two 25 round tops.