This digital tire gauge features an LCD display in plastic casing with a control button and an automatic shut-off for ease of use. Simple attach this gauge to your keychain using the hang hole to always be aware of your pressure levels. This gauge features pressure unites including PSI, BAR, KPA, KG/CM². Range: 0-100PSI; 0-6.85BAR; 0-690KPA; 0-7KG/CM². QTY over 5000pcs by ocean.