Provide a platform for grinding, which can be disassembled as,required, and the grinding angle can be adjusted Combined with angle ruler, twice the result with half the effort It can install drill chuck, grinding wheel, cloth wheel, flexible shaft, etc., and it can be done in machine! Small objects made of hard materials such as metal can be polished Intelligent digital display screen, accurate display of real-time voltage, speed control, Manufacturer: MMHHHG