Make sure that extreme tours do not run into trouble because of a lack of grip. We have thoroughly tested these chains on winter trips through Austria, Serbia and as far as Syria. Even when cars were sliding all over the place, we were able to carry on with a friendly good-bye wave. The snow chains are attached by hand, fit easily to the wheels of enduro bikes and are approved for speeds up to 50 km/h (but we even tried them out up to 80 km/h / ~30 mph). Toughened, electro-galvanised stainless steel chains including tension springs.