For what it's worth, Dexter Axle acquired AL-KO USA late in 2014. Dexter is an ISO 9001 certified company. They are huge in the Agricultural playground, CAT, John Deere, ect. AL-KO axle where just as well manufactured by their parent company in Germany. Rockwood and Flagstaff use each axle, spring or TorFlex, now today one in the same manufacturer. The Dexter axle is a superb undercarriage for these trailers. It is wise to always maintain a personal stock of the components such as bearings and seals, studs and nuts, just in case, especially on a long road trip. Safe Travels!