62-13001/2 inch zinc tubeChrome-plated steel base plate and topMounts directly into rubber grommets in valve coversWashable and reusable 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 62-1300 crankcase vent filter has a chrome-plated steel base and top with a mounting stud. The 1/2 inch diameter zinc tube is designed to push in and clamp directly on to metal or plastic tubing where venting is needed. Constructed with a cotton gauze filter media it can be cleaned and reused repeatedly.