Have now read the other reviews, and am using the one or the other not quite zufrieden.Insgesamt you get a very well thought out and high quality product. In principle, everything from Plastik.Von rail holders made of plastic you have dozens of assembly - with the wrong technique my fingers have done pretty hurt. Stupid, of course, that you have to be incorporated once. Until then, you should make as few mistakes as possible. Frustration came with me on the loops. Although I built according to plan, it funkionierte nicht.Schließlich I was of the opinion that the plan confused and was wrong. I continued to build without the plan and managed. Unfortunately, the iron rods bent a little after the other tracks have been secured. After that, the ball flew off the rails and I was not able to fix the error in the loops. I let the loops away, built without a plan and it worked out differently. This frustration was resolved, but it is possible no loops; - (((The price of 40 euros is appropriate more but I would not want to spend it I built the car over a longer period of patience is important.....