Fastest, most accurate priming tool made. You never touch the primers from the box to the shell. Automatically feeds and installs primers just as fast as you can place shells in the holder. Each primer is perfectly seated with the feel appreciated by precision reloaders. Built-in primer flipper turns them right side up. Simply dump the primers into the tray, shake lightly, replace cover and you're ready to prime 100 shells. Uses low cost, easy to change shellholders. Includes both large and small trays.