Specification: Brand new Name:Mini Rotary Electric Grinder Tool Color:Black Size: Approx. 155mm x 27mm (L*Dia.) Power: 12W Input voltage: AC 100-240V 50/60Hz DC Output:12V /1000mA Max Speed:20000rpm Adapter voltage:DC12V 1000mA Features: It is necessary for DIY carving and grinding Using the principle of engineering design, fashion modeling, feel is good Light Weight and Portable Easy to operate,adjustable speed Perfect for professional wooden working or home use How to use: Step 1. Press the round metal button on the front of the main machine, lock the rotating shaft on the grinding machine main, and then loosen the nut at the front of the main engine; Step 2. Select the grinding head you need and insert the abrasive head into the nut hole at the top of the main engine; Step 3. Continue to press and hold the round metal button, tighten the nut on the top of the main engine and fix the grinding head on the main shaft of the grinding machine; Step 4. Connect the power adapter to the sander and plug in the power supply; Step 5. Push the switch, adjust the rotation speed of the main engine, and then rotate the grinding head slowly close to the grinding object, according to the need to burnish the shape you want; Step 6. The main engine rotation, please avoid pressing the metal button on the polishing machine, so as not to the current is too large, burn the host; Step 7. After use, please unplug the power supply and keep the grinding machine properly. Package Included: 1 x Electric Grinder Tool 1 x Chuck 6 x Drill bit 6 x Sanding drum 10 x Mounted stone 1 x Power Adapter (We will provide adapter according to delivery country) Note: Please allow minor deviation due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.