As a hesitant DIY mechanic, I have always found timing adjustment a daunting task. HOWEVER, this tool has made it a breeze .As a result of using this product, I found that timing adjustments were much faster and easier, saving me valuable time. The plug is sturdy and well-built, which is a huge plus. The only downside I can think of is that it took me a while to figure out how to use it but a quick online search cleared up my confusion. Overall, a must-have for any automotive tool collection!See full review