The Hornady #35 Press Type Shell Holder is precision machined from solid steel and heat treated for reliable reloading of multiple cartridge calibers including .380 ACP .221 Remington Fireball .222 Remington Magnum .204 Ruger and others.Hornady #35 Press Type Shell HolderCompatible with .380 ACP .221 Remington Fireball 6mm TCU .222 Remington Magnum 7x47mm Helm .20 Tactical .204 Ruger cartridgesPrecision machined from solid steel constructionHeat treated for durability and flawless operationFits Hornady Handheld Priming Tool and Cam-Lock Case TrimmerUniversal compatibility with most press brandsEssential reloading accessory designed for precision and reliability compatible with Hornady accessories and most reloading presses on the market for versatile ammunition preparation.