If you've got a Forster co-axial reloading press, then there's an easy way to prime cases using your go-to press! The Forster E-Z-Just Shell Holder provides a priming conversion kit designed to work with the company's co-axial press design. Each Forster E-Z-Just Shell Holder features a pair of jaws that clamp onto most rifle and pistol cases used by today's shooters. As long as they have a rim thickness between 0.45-0.72 inches, they'll work with this priming conversion system. Mfg: Forster Products, Inc.