1. FAST AND ACCURATE HITTING MEASUREMENTS: Our belt tension gauges are clearly marked with easy to read markings to help you quickly, easily, and accurately measure belt tension to aid in your vehicle adjustments and extend the life of your belts. 2. EASY TO USE: Place the small O ring on of the 10 lb mark and rest the U shaped bracket at a 90° angle against the bottom of the belt, position the large Oring to the reference point and record the reading. Then push up on the rubber bumper until the small O ring touches the bottom of the tool body, then reposition the large O ring to the reference point, and the difference in the reading is the belt deflection. 3. U BRACKET: This universal belt tension gauge has a universal U bracket designed to hold the belt firmly in place while you adjust the tension, helping to reduce friction when tensioning the belt properly to extend the life of the belt. 4. UNIVERSAL BELT TENSIONER: This tensioner can be used on any vehicle, ATV or motorcycle with an auxiliary transfer belt and a 10 lb. weight, etc. Ideal for motorcycle belt replacement, adjustment or .