The Hornady Lock-N-Load AP Progressive Press Shell plate makes changing calibers a breeze on your Hornady Lock-N-Load Press and the older Hornady Projector Press. There is a shell plate available to fit almost every caliber. The shell plate numbers correspond with the Hornady shell holder numbers for different calibers. These shell plates are designed to work with the EZ-Ject System and Pro-Jector presses. Features: Product type Sleeve holder Trademark Hornady