Clamp-On BreatherFits 1 3/8 in. O.D. TubeWith ShieldWashable FilterChrome with JEGS Crown LogoSold IndividuallyIncludes:(1) Clamp JEGS 50196 clamp-on chrome valve cover breather with shield is designed to clamp onto a 1 3/8 in. O.D. breather tube and will help to remove excess crankcase pressures from your engine. Breather tube can be purchased separately under part# 809-88962074.