MEC knows that reloaders will inevitably need to replace small parts, and provides the most common ones so that you have spares readily available when Murphy's law intervenes. MEC is known for making high-quality shotshell presses that work great for all levels of shotshell reloaders from beginners just learning this skill to advanced loaders who have been reloading for decades. A shotshell reloader never knows when a part might break or be lost.