Check the listing for details. (300 BLACKOUT) SAVE YOUR BRASS! Brass Case Annealer Reloading Tool. Condition: New. Listed at 25.00 USD. SAVE YOUR BRASS! Brass Annealer is a tool for any shooter looking to prolong the life of their brass cases through the process of annealing. The 3/8" shank allows easy installation in most drills and a propane torch will heat the case safely relaxing the neck tension of the case that surrounds the bullet. This tool is for use with 300 Blackout Cases Only and has been expertly manufactured in the United States of America. This tool is constructed of 6061 Aluminum and will pay for itself in a few reloading sessions. Whether you're a seasoned shooter or just starting out, this tool is a must-have for your reloading process. Other calibers are available upon request. Be sure to check out my other calibers that are in stock more are on the way.