MJR Tumblers Single Barrel Rock Tumbler with Grit Media Kit - Polishing Tool for Adults and Kids Rock Polisher Machine with Grit & Plastic Pellets for Polishing Stones, 15 lb

This 15 LB Rock Tumbler is a versatile product that has the capability to use 19 different barrel combinations. Although users have reported that it is quite a loud product, it can be used for other sizes of barrels and polishing small hand tools. The lid has a 6" opening and can fit a few rocks of this size with smaller ones. The base units for different tumbler sizes may differ, but the 40lb capacity tumbler can use different or multiple barrels. The editorial review is mixed. Though some users reported great results of glass tumbled from their local mine in just a few days, others found the product to be high maintenance instead of effective. Some of the issues reported were a loose belt which affected the runtime, barrel cracking, and bearing failure.