Description from Lortone:
Perfect rock tumbler for those just getting started.
Our all rubber barrels are quiet and long wearing. The single 3 lb. capacity barrel is sized for smaller stones up to 1-1/4 inches. We’ve molded the barrel with special ribs to increase the tumbling action. Base dimensions: 6″W x 9.5″L.
Barrel inside dimensions: 4-1/8″ depth, 3-7/8″ diameter.