821N.M Brushless Impact Gun

Long life brushless wrench service life is generally seen. It can reach about 10 times the brush drill. Power can simply remove tires and tripod. The momentum side is even stronger. Maintenance-free without replacing the carbon brush. It is convenient enough for daily use. Material aspect is recommended to select tungsten steel. Characteristic by high hardness, wear resistance and corrosion resistance. The head and high aluminum mainly.