Intelligent power outage protection: can be USB Type-C charging metal carving pen, built-in overload protection chip, when the resistance is too high, it automatically disconnect protection and extend the service life of the jewelry carving machine Low noise: This kind of ropeless rotation tool is very low when working, even if someone is sleeping, he or she not feel very noisy. It is very suitable for beginners and professionals to use anytime, anywhere, creating a creativity you like 3 horizontal visual speed adjustment: This electric carving pen is suitable for all materials, about 5000-18000r/min, and carved different materials with different speeds. The weight of the carving pen is light, which is in line with ergonomic design, which can provide you with precise control and carving. The carving machine kit includes 30 sculpting drills, 3 saw drills, 1 connecting stick, 3 drill bites, 1 polishing drill, 16 templates and 1 USB charging cable. All these drills are enough to engrav, engraving, polishing, polishing , Polishing, , wiring, grinding, drilling, cutting.