Easy to install (directly bolt on). High flow air filter can reduce the resistance of the engine air intake, and improve per unit time air intake and volumetric efficiency when engine running. Help to draw more air into your engine so as to improve throttle response and enhance horsepower. The fine mesh increases the amount of air flow, straightens the flow and stops sucking hot air from high temperature engine compartment. It is washable and will last the lifetime of your engine. Material quality? Stainless Steel + filter net. Package included? 1Car Air Filter. There may be slight size deviations due to manual measurement, different measuring methods and tools. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.