The device could be as simple as described and was then put together consecutive hours in use (the branches of four fruit trees were kleingehäckselt). It's really very quiet and even after several hours of work on the unit I did not feel to have very charged my ears, like the other noisy equipment is often the case. The shredder shredded really effortless everything kindling and branches and can be operated very well. So it is thoroughly recommended.
