Thumler”s Tumbler Model B No. 140 is the standard of handloading experts. Thumler”s Model B, is a heavy duty, professional quality 15 pound capacity tumbler. The lid is tightened by the use of wing nuts and will be easy to use. Features larger, more powerful motor-continuous duty, fan-cooled with overload protection. Recommended oil for the bearings is SAE20 wt. electric motor oil. Steel hexagon barrel with removable rubber lining for long, efficient and quiet operation. The Model B tumbler has a five year guarantee on barrel and liner. Extensively used by serious hobbyists, laboratories, schools and industry for an unlimited variety of tumbling and mixing operations. For parts and accessories see the category “Lapidary Parts and Supplies”, or e-mail for assistance. Shipping weight 18 lbs. FOB Auburn, WA.