The grinder is noisy, it is tiring to work without headphones. Very poor dust protection. On brick and flat slate, the start button instantly clogs. The location, by the way, is inconvenient. The flywheel for setting the maximum speed also sticks out of the case, it is easy to hook it and knock down the installation. Stabilization of revolutions acts somehow strange, unstable. Just a surprisingly unsuccessful model of a famous brand, I did not expect.