Thumlers Tumbler, Mod. B, No 140 | Stone Age Industries
Thumler's Tumbler, Model B No. 140, 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.