Having experience with many machines, cutting and drilling bits I was impressed with this bit. I've used it for non-metallic surfaces so far. I've used these step drills before and they make life easier. If I don't have to lug around 8 different drill bits for a specific project, then I'm happy. For me these were special exercises. You will definitely find a use in your tool kit. This bit cuts well. wood, drywall, etc. It comes in a protective plastic sleeve. I like it because other tools don't break it. I highly recommend this beat. You'll be glad you added it to your collection.