Many times, brass necks or shoulders will split from too many reloadings or cartridge cases will work harden and be discarded that seemingly no longer shoot accurately. When annealed properly, your brass will have a longer life and display less fliers on the target. And at an average of 400-500 per hour, it won’t take up too much valuable time that you could be out burning powder! 110 volt with a 220 volt switch. Torch heads are pictured, but not included.