Check tire pressure before driving when tires are cold LCD screen digital display, you can clearly read the data at day or night Including air-bleed switch, press this switch to adjust to normal air pressure when the tyre pressure is too high.Self locking head, easy to connect. Suitable for trucks, motorcycles, most tires of bike, automobiles and any passenger vehicles Including air-bleed switch, press this switch to adjust to normal air pressure when the tyre pressure is too high Determine the proper pressure for your tires by checking the owner's manual or driver's side doorjamb placard, Manufacturer: TSMORY