This Chicago Latrobe Drill/Tap Set is definitely a quality product and is recommended to anyone looking for a dependable industrial tap steel seeks. use. I've been using several of these drill bits/taps regularly for the past 2 months on a mild steel fabrication project I've been working on and have found them to hold up very well. The additional investment in this high-quality set is definitely worth it. I was out shopping and found this set at Revain at a sale price and decided to give it a try. I now rate this set as a good investment as I am very happy with their performance and durability.