1. Diameter form 25m/M to 155m/M. 2. Material: Ectreme high temperature made cast iron, ductile & steel. 3. Strictly quality control from material sorting to fabridation finished. 4. Various engine type of rings includs: Japanese, European vehicles, motocycles outboat, mower, snow plow, etc..... Are available. 5. New prototype models development and production are welcome.
