Feature:1. Rotate the annular central shaft for speed regulation, one‑button switch, click forward and reverse rotation 0‑35000pm, and the rotation speed can be adjusted according to the needs. The LCD display screen can see the steering, the speed and the power.2. The handle shape is all metal, suitable for mold cutting, engraving, denture grinding, nail polish, gel polish removal, dead skin removal, drill removal, etc. Ergonomics design, pen‑type body, compact and convenient, not easy to leave fingerprints, not easy to fatigue after long‑term use.3. The vertical charger is either to charge the machine, or as a stand for the machine. It does not take up space and has a built‑in 4000mAh large capacity battery.4. High accuracy and high torsion, low noise, low vibration and low heat. The ventilation design reduces the temperature of the polishing pen.5. The brushless machine has a built‑in permanent strong magnet, will generate more power during the high‑speed operation of the resistor, and it will also reduce the noise and efficient operation, the brushless phase is more energy‑saving.How to Use:1. Take the host and handle out of the case, insert the connecting wire, and make sure that the plug wire is inserted to the proper depth.2. Rotate the three‑leaf spring structure on the handle, loosen the buckle, put the grinding head in, and turn it back in reverse to ensure that the grinding head do