Feature:Material: Stainle steelPreure Range: 2.0/2.2/2.4BarFit on any standard size existing tire valve stem.Visually alerts you when the tire preure is low to help avoid premature tire wear or blowouts from under-inflated tires.Color Indication:Green shows that tire preure is normal.Yellow shows that the preure is down about 5 pounds.Red alerts you that the preure is down by at least 10 pounds.Size:2.5cm x 1cm (approx).Note:Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, Thank you. 1. There is no limited stock to fulfill the orders on a daily basis.2. For USA/CA /RU the shipping is quickly.3. Priority delivery,fast delivery in 48 hours.4. No invoice or receip or promotional materials included.