Excellent performance: They won't harden or crack over time through from hot or cold temperature changes. Premium materials: With high quality and durable PVC rubber keep your led away form dust and water and any error that cause by them. Superiority: Designed for LED headlight kit, make the headlight kit clean and tidy. This listing is for a pair of brand new aftermarket headlight housing seal dust cap. Clearly indication: With a sealed back and is good for headlight opening ranging from 2.5inch, 2.75inch, 3.5 and 4inch (the sealed back can be cut open depends on your installation needs). After-sales service: Please feel free to purchase our products, our products have undergone strict quality inspection. Please carefully look at the model when you purchase, welcome you!