Checking tyre pressure is child?s play with the flexible and unbreakable Air-Flexx valve extension. Air pressure check: One of the most common maintenance defects in the fleets of haulage firms and bus companies is inadequate air pressure of inner twin tyres. Checking tyre pressure using the correct valve extension is child”s play. Viersen, July 2012. Tyre management in the vehicle fleet is not rocket science. Correct air pressure in the…