The product corresponds to the use that I will do, but I take the points different views are: - Light packaging, package arrived in poor condition, results missing washers for wheels. - A finish a little "made in china", we need to tinker a bit to overcome the lack of precision parts machining especially on the part of management that has a lot of game, adding washers was necessary. - Regarding installation, manual in English is a bit basic but nothing complicated, mounted in 30 minutes without rushing. As against a good time to change them imperfections. - Regarding the laden weight of 550 kgs I doubt. I do not advise against this but it is a bit limited for the price, 60 seems to me more consistent.