Okay, first of all, I'm a licensed general contractor. I order almost everything from Amazon because when I count my time it just isn't worth going to HD or anywhere else as people don't like paying for purchases. I read reviews carefully and I usually try to separate the whiners from the newbies. I bought this bit set knowing full well that I wouldn't get a 350.00 bit set as one reviewer mentioned. I tried two nozzles today, the first came loose and started spinning in the shaft, the second broke off. In less than 5 minutes I'm missing two bits in my set. Absolutely terrible. The idea, the presentation is fantastic, but the implementation failed. Terribly awful product that is an absolute waste of time. I'm in my 60's and have been in the construction industry for 46 years. As it turned out, I had to go to a big orange store and buy two for my project. Save yourself the frustration and wasted time.