N090-030 KUNFU 30mm Carburetor with Cable Choke for CG/CB 200cc-250cc ATV, Dirt Bike & Go Kart. The item fits for CG/CB 200cc-250cc Vertical Engine. The material:Zinc and Aluminum. The inside diameter of carburetor:30mm The outside diameter connected with air filter:44mm BRAND NEW PRODUCTS.BEST QUALITY GUARANTEED.