The heavy duty and versatile two barrel and six pound capacity tumbler is the best of its kind. It comes with a two pound capacity which is definitely what you need because it offers a much longer life. Its barrel is made from molded rubber which makes it ideal for making single type stones of jewelry. This is definitely what you would need if you are into jewelry making or in case you are into brass polishing. This is also the best because is heavy duty and most importantly, its motor comes with a fan cooler to avoid it from overheating. It is overload protected to ensure that the motor would not have any problems. If you are looking for something to help jewelry making a lot easier, then the 6 pound two barrel tumbler is your best choice.