MEC is known for making high-quality, long-lasting shotshell presses that work great for beginning shotshell reloaders to the most advanced high-volume shotshell reloader. E-Z pack shoshell stackers are a great accessory to have on any reloading bench. They are perfect for neatly stacking loaded shells in preparation for filling cardboard boxes in one easy step. Notes: This tool helps to speed up the reloading process by allowing reloaders to efficiently stack loaded rounds and put them in an empty box