Review on Aluminum Hexagon Universal Motorcycles Bicycle by Bryan Gibbons

Protects valves, seals tight at o-ring. Seals water and dust destroying the valve. It looks beautiful, but the main thing is not the style, but the functionality is more important than the form. When you have a bike or low profile tires, maintaining air pressure is very important. Valves fail and leak. Dirt, dust and debris can cause this and these caps will help prevent it.