The device was delivered very quickly. (3 days from order) Handling of the shipping company was not obtimal. Packaging was corrupt and totally dirty .Aufbau alone in 6 hours. 5 stars for accessories such as screws and parts manual. 1 star for the supplied Werkzeug.Der advantage of Fa.Kettler is that everything is in place and fits. The unit is very quiet in operation and is fun. Only a lack in my view, is the seat that you would have to rethink .The bolted to the rear cross member beneath the back pad with two star wheels, because that's Wackelpudding.Behelfe me with a longer thread and a mother and as if by magic, it is fixed.