For use on motorcycles, ATVs, go-carts, snowmobiles, air compressors, tractors and anything with a carburetor, Clean easily with grease-cutting dishwashing detergent; just clean, oil and reuse indefinitely, Use outside pre-filter dry for dusty conditions or oiled for extremely wet conditions, Two-stage air filters come apart for maximum airflow and ultimate cleaning, Unsurpassed in airflow, dirt stopping and overall performance, Black inner foam, red outer foam and a urethane flange, Clamp directly to carburetor, Made in the U.S.A.