Material: chrome metal Size: 2.3 x 1 x 1 cm Suitable for cars, trucks, bicycles, motorcycles, hot rods, vintage cars, classic cars, street racers etc. Install this new fitted pressure socket. Fits most SUV Sedan with existing standard size tyre valve stem Just look at the colour to see if your tyre is low or normal. Green indicates that the tyre pressure is normal. Yellow indicates pressure is below 5 pounds. Red warns you that the pressure is down at least 10 pounds. Description The point is a set of 4 pieces car tyre monitor mother valve pressure caps, which is compatible with cars, trucks, bicycles, motorcycles, hot rods, vintage cars, classic cars, street racers etc. Visually alerts you when tyre pressure is low, to avoid premature wear or blowouts of inflated tyres. Green shows that the pressure is normal, yellow shows that the tyre pressure is approximately 10%, red warns you that the pressure is down by at least 25%. Features -Colour: as shown. -Material: chrome-plated metal. -Size: 2.3 x 1 x 1 cm. -Determine the correct tyre pressure for your tyres. -Inflate the tyre to correct the pressure. -Install this new fitted pressure socket. - Simply look at the colour to find out if your tyre is low or normal. -Green shows that tyre pressure is normal. -Yellow shows that the pressure is below 5 pounds. -Net alerts that the pressure is down by at least 10 pounds. Package includes: 4 x Car Tyre Pressure Gauge Gauge Monitor