Zinc tube adapts to 1-1/4 inch valve cover holesChrome-plated steel top and basePushes directly into valve coversWashable and reusable white filter mediaK&N crankcase vent filters are perfect for racing applications, vintage cars or individuals who want to add some aesthetics to their classic carbureted engine. The 62-1590WT crankcase vent filter has a K&N embossed chrome top and steel base. The zinc tube adapts to 1-1/4 inch hole and can be pressed into valve covers. Constructed with a white synthetic media it can be cleaned and reused repeatedly. A rubber fitting is included.