About this item1.AIRTIGHT, LEAKPROOF SEAL--Each air dust covers feature O-Ring rubber seal create a tighter and more effective seal, be sure there is no air leaking on a long-tough drives.2.PLASTIC ABS MATERIAL--These TPMS specific air valve stem caps are made of high-quality durable plastic material, Insulated, Corrosion resistance and Anti-static.3.EASY TO INSTALL & REMOVE--Each air valve stem caps with grips design outside to make it easier to install&remove, grab and tighten on your tire valves with your fingers on the fly.4.GUARANTEE SATISFACTION--Our tire valve stem caps are not only whether-resistant, dustproof and more durable, they're backed by unbeatable quality aurance.Universal Tire Valve Stem Caps These dust covers for wheels help keep tires inflated at the proper level on bikes, cars, SUVs, trucks, and other motor vehicles. Material: PlasticColor: BlackSize: 1.6*0.8cm/0.63*0.32inchPackage include:10/20/30Pcs *Tire Valve Caps(please choose)