Rolly Toys Halfpipe Claas Dump Trailer It is stable because it has 2 wheel axles. Fits any Rolly Toys vehicle. This trailer is suitable for all ROLLY TOYS tractors. A great complement to any vehicle. The toy has: double axle for stability, the trailer lifting mechanism makes it easier to dump the load. Rolly Toys is a German company founded in 1938 by Franz and Rosa Schneider. Today, after more than 75 years, the family business is still run by the second and third generations with no less commitment. Since its inception, Rolly Toys' goal has been to bring joy to children and parents around the world through the highest quality children's toys.