UNIQUE DESIGN-ANTI-SEIZE: Our tire valve stem caps come with high-grade aluminum alloy shell and plastic insert to prevent the valve stem from corrosion and leakage, esspecially in wet/cold area. WIDE COMPATIBILITY: Our tire air caps with inner diameter of tire valve caps 7mm, and the inner height 13.8mmare compatible with all American standard schrader valve stem. Include cars, SUVs, trucks, RVs, bicycles, bikes, and other motor vehicles. HEAVY DUTY MATERIALS: This Valve Stem Caps are made of high-grade light-weight aluminum alloy, anodized & powder coated finish for maximum strength and durability, surface anodic oxidation treatment makes the color brighter. LEAK-PROOF: Plastic liner and built-in one-piece sealing ring insidehave strong leak-proof function. Prevent damage to the car due to tire leaks. STRIPES DESIGN: Our Valve Stem Caps are easily hand tightened or took off. COLOR FLAG AND BEAUTIFUL APPEARANCE:We love America! The vibrant and lifelike American flag made in Crystal drop rubber vividly embodies our utmost patriotic devotion to the United States, The Black and white appearance looks more elegant. Tire Valve Stem Cap Metal with Plastic Liner 8 pcs/Pack, Corrosion Resistant, Anodized Aluminum, Leak-Proof American Flag,Universal Dustproof Stem Covers for Cars,Trucks,Bike Motorcycles-8pcs with Plastic Liner-Black