Power tools refer to a tool that by handheld operation, uses a small-power motor or electromagnet as a power to drive the working head through a transmission mechanism. Advantages: Power tools have the advantages of convenient carrying , simple operation, and diverse functions, which can greatly reduce labor intensity, improve work efficiency, and realize manual operation mechanization. Therefore, they are widely used in construction, housing decoration, automobiles, machinery, electricity, bridges, and gardening and other fields, and enter the family in large numbers. Features: Electric tools are characterized by light structure, small size, light weight, low vibration, low noise, flexible operation, easy control and operation, easy to carry and use, strong and durable. Compared with hand tools, it can increase labor productivity by several to tens of times; it is more efficient than pneumatic tools, low cost and easy to control.