PROFESSIONAL TUMBLING - The Ultimate Tumbler delivers spectacular results with unparalleled ease of use! With its large 2-pound barrel, 3 selectable speeds; and timer with settings for days and hours. QUIETEST TUMBLER - The Ultimate Rock Tumblers all-new design includes a sound-dampening cover that makes tumbling quieter than ever, perfect for enthusiasts who tumble indoors, or in smaller or shared spaces. ALL-IN-ONE TUMBLING KIT - This kit has everything you need to get started, including 1 pound of rough rocks, 4 bags of grit, 5 jewelry fastenings, a newly designed strainer, and our exclusive GemFoam rock polisher for a brilliant finish! USE GEMFOAM FOR DAZZLING RESULTS - Your tumbled rocks will have an incredible shine thanks to our reusable GemFoam rock polisher. Just add GemFoam and water to the barrel after your final tumbling stage for a brilliant finish! HIGH-QUALITY EDUCATIONAL TOYS - We proudly to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is anything less than extraordinary, let us know so we can make it right for you!