Chisel is a double insulated hand-held electric tool powered by single-phase series excited motor. It has the characteristics of safety, reliability, high efficiency and convenient operation. It is widely used in pipeline laying, mechanical installation, water supply and drainage facilities construction, indoor decoration, port facilities construction and other construction projects. It is suitable for pickaxe or other appropriate accessories, such as chisel, shovel, etc Crushing, chiseling, excavating, grooving and cutting of masonry structure and asphalt pavement.