For this product: The 12V angle grinder uses a brushed motor, which has fast starting, timely braking, smooth operation and relatively simple control circuit. The high rotation speed of 19,500 rpm allows for fast material removal speed, saving time and energy and ensuring reliable and efficient work. Cordless design, powered by lithium battery, you can recharge it at any time. 2- The housing has ventilation holes for high heat dissipation to cool the operating mechanism and prevent it from overheating. 3-The thick baffle design reduces the splash of workpiece debris into the machine, making the operation process safer and effectively extending the service life of the machine. This cordless mini angle grinder is powered by a 12V, 2.0Ah lithium battery that provides enough power for extended use, so you can tackle any project without worrying about running out of power. Humanized spindle lock for easy replacement of grinding wheels. The ergonomic handle design allows for easy one-handed operation, and a convenient switch on the side makes it easy to grip and use. Cordless sanders can be used for surface conditioning and grinding or iron cutting, and can also be used for home improvements such as cutting and polishing tile, wood, stone, steel, etc. Very suitable for interior decoration, property maintenance, such as wall panel grooving, floor cutting, tile cutting, equipment maintenance, water and electricity installation, PVC pipe cutting and daily maintenance.