This automotive tensioner gave my car belts new life. As a result of my tests, i determined that it was durable, reliable and built to last .The installation was fast and easy and it fit perfectly. It runs smoothly and quietly, and accurately maintains the right level of tension for superior performance. The only con I experienced was that it was a bit pricey, but considering the overall quality, it's completely worth it. I highly recommend this tensioner for anyone seeking a high-quality and reliable component for their car..