COFFLED&reg; 1pair Motorcycle Cycling Bike Bicycle Car LED lamp Wheel torch Lights Tyre Stem Valve New and high quality Installs on standard valve of cars, motorcycles or bicycles High impact, water and rust resistant Chrome body with ultra bright, long life-span LED lamp Automatic light sensor turns lamp on when wheel is in motion Increases nighttime and bad weather visibility to enhance safety Easy to install, twist off your original valve cap and replace with thisvalve cap LED light Color of Light: Color changes, flashing Powered by 3 replaceable AG10 button batteries (included) Length: Approx. 1.5 inch / 3.6 cm Valve Cap Diameter: Approx. 0.35 inch / 9mm