Annealing has become very popular as of late to rejuvenate your brass so the necks don't crack and improve the accuracy of your handloads. Little Crow Gunworks Brass Annealing Mandrels are made so you can anneal your brass with a minimum of investment. All it takes is a Mandrel, a propane torch, and a drill with a 3/8" chuck. The BAM tool is available in most popular calibers. Annealing time varies with the size of the case. This tool makes it possible to anneal your brass with a simple torch and a 3/8 in drill.