Tire Valve Stem Covers: These tire valve stem covers are made of shiny rhinestone material. Give your car a unique luxurious look with a beautiful dazzling glow. 2. Universal Tire Valve Covers: These wheel covers help keep tire inflation at the proper level for bikes, cars, SUVs, trucks and other motor vehicles. 3. Tight leak-proof seal: Our tire valve is stuffed with rubber sealing ring inside, forming a tighter and more effective seal, so it won't leak during long and hard driving. 4. Easy to install - 4 stem caps, can be easily tightened by hand, no additional tools are required, very simple and convenient. 5. The cap size is 16*12mm. It is universally applicable to standard valves. 6. Prevent dust or snow in the valve from being easily corroded, and prevent foreign objects from blocking the valve core and causing the tire to leak and cause accidents Model A: Specification: Color: fluorescent-green ,Blue Material: ABS material Size: 16mm*12mm*12mm/0.62*0.47*0.47in Model B: Specification: Color: fluorescent-green Material: ABS material Size: 17mm*13mm*13mm/0.66*0.51*0.51in