DescriptionThis item is a professional tire stem air caps cover for your bike. Made from premium material, it is durable and practical for longtime use. It's effortlessly to screw on by your fingers, install orremove easily when checking your tire air pressure.Features- Material: Aluminum alloy. - Size: About 1.50X0.80X0.80cm/0.59X0.31X0.31inch. - Fit most bikes, meeting your various needs. - Can help prevent leakage, dirt and other objects from damaging cores. - Easy to install, just need to screw it onto tire stem. - Made of aluminum alloy material, highquality material ensure long service life.- And solid and durable designmake it fit for long time use.