Description Knurled Tire Valve Stem Caps Aluminum with Plastic Liner Corrosion Resistant Tyre Wheel Nipple Caps for Cars and Motorcycles//Tire Valve Stem Cap Cover Metal with Plastic Liner Corrosion Resistant Universal Stem Covers Leak-Proof ANTI-SEIZE DESIGN- The tire valve stem caps come with metal shell and plastic insert, which will prevent the valve stem from corrosion, special in wet/cold area. WIDE COMPATIBILITY- Our tire air caps are compatible with all American standard schrader valve stem. Include cars, SUV, trucks, RVs, bicycles, bikes and other motor vehicles, etc. The inner diameter of tire air caps is 7mm/0.31inch, and the inner height is 13.9mm/0.54inch. EASY to INSTALL- With the simple and smooth horizontal stripes design, ZZTZZ valve stem caps are easily hand tightened or took off. LEAK-PROOF- Built-in One-piece sealing ring inside the plastic liner with leak-proof function. Prevent damage to the car due to tire leaks. FASHION APPEARANCE- ZZTZZ valve stem covers are made of durable light-weight aluminum alloy. The anodized metallic finish looks very stylish and fashion. Its perfect gift for friends, boss, family members and etc. Specs: Includes 4 tire caps(please choose you want) Made of anodized aluminum Surface treated to prevent oxidation Available in 5 colors Pros: Aluminum exterior and plastic interior offer great combined durability Plastic interior and threads prevent oxidation and fusing Can survive exposure to water, air, and dirt Universal Stem Covers for Cars Trucks Motorcycles SUVs and Bikes Package: 4Pcs* Tire Vlave Stem Caps(Please choose)