Perfect for the beginner! A small, single-barrel tumbler is a great choice for your first tumbler or a tumbler that you are giving as a gift. They are the least expensive to purchase and have the lowest operating cost (the cost of grit, polish and rough rocks). This rock tumbler kit has everything you need to start tumbling right away. This machine has durable rollers and bearings that are made to last over years of frequent use. The motor is properly sized and overload-protected. If it overheats it will protect itself by shutting off automatically. The soft rubber barrel is thick enough to last a long time. If you use this tumbler a lot and a barrel, bearing, or belt wears out you can purchse inexpensive replacement parts and fix it easily yourself.