Device exercising its function as well ripper. To scarify, he scarified very well. Adjusting the height of the blades laborious. Given the rod and the handle, you wonder is it life? Not even talking about the grip of the holding handlebar system! Makes you wonder if it's an engineer who designed this machine !!! (German quality absent that day ???) How can we do maintain that weight machine has a single screw ??? She eventually damage the maintenance system and break the handlebar (SAV quid ??). In summary, it was value for money and we have to assume with its flaws.