Anti-slip Pads: Four anti-slip pads under the base can prevent the product from sliding or scratching the tabletop, ensuring stable operation. Anti-slip Lock Knob: It makes you open and close the cover of the barrel more easily and quickly. Application It is suitable for kids above 8 years old to polish various rocks. How to Use 1. Rotate to unlock the top cover; 2. Use tools to pry open the internal cover; 3. Clean the stones thoroughly and then place them in the barrel; 4. Pour an appropriate amount of clean water into the barrel to submerge the stone; 5. Add different grinding grits according to different steps; 6. Tighten the barrel cover to avoid leakage, place the barrel on the polisher, and then connect the power supply; 7. Select the polishing time and press the ON/OFF button to start polishing. Specification Color: White+Black+Grey Material: ABS, Rubber, Stainless Steel Assembly Required: Yes Mounting Type: Tabletop Power Source: Corded Power Plug Type: EU Standard Suitable Ages: Above 8 Years Old Voltage: AC 100-240V Output: 12 V/1000 mA Timing: 1/2/4 Days Gross Weight: 1.5 kg/3.31 lbs Net Weight: 1.2 kg/2.65 lbs Product Size: 15.7*20.8*17 cm/6.18*8.19*6.69 in Base Size: 14.4*20.8 cm/5.67*8.19 in Package Size: 26.5*21.5*11 cm/10.43*8.46*4.33 Package Included 1*Rock Polisher 1*Adapter 4 Bags*Polishing Grits 1 Bag*Rough Stones 9*Jewelry Findings 1*English&Chinese Manual Notes 1. Minors should purchase and use under the supervision of a guardian. 2. Please read the instructions carefully before use and be aware of your surroundings. 3. After grinding, please finish the work and store the product out of children's reach. 4. The roller needs to be cleaned before putting in the next step of polishing grits. 5. The grinding should be kept away from the eyes. Once it enters the eyes, you should rinse with plenty of clear water and seek medical attention if irritation persists. 6. Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before you order.