【Sturdy and Durable】DunleyMin rock tumbler machine is mainly made of aluminum, copper, iron, and organic glass with a spray coated process, which are wear-resistant, impact resistant, rust resistant, and ensure a long service life. 【Easy to Use】The timer knob(0-60 minutes), 5-speed control, forward/reverse switch, and power indicator light make it easy to set up and use this gem polishing machine with ideal polishing results. 【 Excellent Performance】60W DC motor with up to 3000 RPM, quality polishing barrel and polishing steel balls can easily polish small objects, remove surface stains from your jewellery and give your old jewellery a new face! 【Visible Design】The clear barrel is convenient for you to observe the internal situation at any time during the operation to ensure the polishing effect. The simple construction and smooth surface make it easy to clean and maintain this product, and all you need is a rag (not included)to make it look new. 【Space-saving】With compact structure and small footprint(9.06*7.09 inches), this product is suitable for home studio or small business use without taking up too much space., Manufacturer: DunleyMin