AUMO-mate&reg; Solar Car Wheel Tire Air Valve Cap Light Auto Wheels Decor Lamp Valves Cap 100% brand new and high quality Size: about 4.1cm in diameter, 2.5cm high; packing size: 8.8x6x3.8cm Easy to install, just simply screw on to your tire valve Light color: White, Red, Blue, Green Enhances safety by increasing visibility at night and during bad weather conditions. Easy to install and remove