If you are serious about tumbling, this high capacity twin 12lb barrel / heavy duty tumbler from Lortone is ideal for the following applications: Polishing and grinding of gemstones and glass.
When polishing and grinding gemstones and glass, make reference to the abrasive Silicon Carbide. When burnishing silver castings/ammunition casings make reference to Stainless Steel Shot and Burnishing Compound
 
Twin 12lb Barrels
​15 Cup Capacity per barrel
30mm x 70mm max rock size.