Features: Adopt brush motor, quick-start, timely braking, smoothly speed regulation in a wide range, relatively simple control the circuit and so on. 6 gears of speeds adjustable, you can easy to adjust the speed according to different usage. Adopts high-power all-copper motor, high temperature resistance, high torque, with nice heat dissipation effect and fine durability. Humanized safety lock on the spindle is designed for provide high working efficient. Conform to human engineering handle design, rubber covered, anti-slip for easy grip and convenient use. Thickened baffle design reduces workpiece debris splashing into the machine, makes it more safer, and can effectively prolong the service life of the machine. There are vent holes on the housing, high heat dissipation for cooling the operating mechanism from overheating. Selected quality lithium battery(Optional Accessory), quickly recharging, with four protections of over-voltage, over-voltage, over-temperature, and recharging. It can be used for surface conditioning and grinding or iron cutting, rust removal and home improvement. Wide applications, perfect for polishing, grinding and cutting ceramic tile, wood, stone, steel and etc..