Specification: Color: Silver Material: Metal+PC Fit Type: Universal Fit Size: As pictures Vehicle Service Type: car, motorcycle, bicycle, and so on Features: 1)Visually alerts you when the tire pressure is low 2)Car tire pressure monitor valve help to avoid premature tire wear or blowouts from under-inflated tires,increases fuel efficiency, extends tire life 3)3 Noticeable Colors, Easy to view: Green shows that tire pressure is normal. Yellow shows that the pressure is 10% lower than standard about 5 pounds. You should inflate the tires . Red alerts you that the pressure is 25% lower than standard at least 10 pounds. And you need to stop driving immediately. Fitment: Fit for (2.4Bar),applicable to car,motorcycle,bicycle and so on. Package : 8 * Tire Pressure Indicator Valve