The Fifth Wheel Pull Hook assists the driver in releasing the fifth wheel which can cause neck, shoulder and back injury as well as, damaging your clothes with grease, oil, and road grime. This pull hook can help eliminate these problems. This tool also has other functions. It also works as a safety multi-tool for truckers. As a Door Latch Handle Extender, it is a safety leverage bar to assist the driver operator in opening and closing shipping container doors. Great for opening shipping and cargo containers that are rusted or iced over! The Tire Thumper function assists the driver operator in a quick method of evaluating properly inflated tires for truck driver safety. Properly inflated tires make a loud, sharp thud. Poorly inflated tires make a dull thud. For more information or for wholesale orders.