The Berrys 73743: A powerful 14/20 grit corn cob by Berry\'s, crafted with precision to provide deep cleaning and polishing for your brass to achieve a bright and gleaming finish. Our Brass Bright is free from ammonia to ensure a safe and effective cleaning process. All you need to do is add between 2 and 4 cap fulls of our product to your media prior to tumbling to witness a remarkable shine on your brass. This kit generously includes 6 lbs of corn media and an 8oz of Brass Bright.