Brushless Angle grinder and what is the difference between ordinary?

。 No carbon brush, low fault rate and continuous working time of hours. 。 Large torque, strong power, improve grinding efficiency % above. 。 Machine lighter, improve workers operating comfort. 。 Brushless change without carbon brush and more efficient, continuous working time is long, because the inside of the magnetic field is not electricity, is electricity also has a magnetic field, so that higher speed, more power, so it's really good, but not the same brand, quality is different also, some abroad have carbon brush is really good, but this is just a part of price is high, but take the middle price or domestic brushless may be a little better, but the price is more expensive than a brush, use a line still, is light, I don't have to. 。 。 Workers, said can also.