Highly durable, sturdily manufactured dual rotary tumbler with a pack of Rock Polishing Abrasives (4 different packs). Get a smooth, polished finish on rocks, semi-precious stones, glass, even metals! Quiet low-speed tumbler is designed to run for days at a time, ensuring a smooth, lustrous finish. DUAL TUMBLER DESCRIPTION -Two generous 3 lb. capacity drums -Rubber barrels for quieter operation -120V Electric Input -Max Speed 3400 rpm -Abrasive Media Capacity 2.3 lbs -Diameter of Drum 6.5" -Product Weigh 8.4 lbs