My plumber stopped by to fix a leak for us. While he was here he mentioned that he was working on a job with marble walls when he came upon some stripped screws he needed to remove. He said he put a KnifeEdge® Bit into his hand held screwdriver because space was tight and he was afraid of chipping the marble with a power tool. He stopped and looked me right in the eye and said, “Your bit worked better than I ever thought possible. It just really worked and saved me a lot of time and trouble.” Obviously, I was pleased to hear that. At $130/hr his customer should have been pleased as well. It’s always good when others recognize our efforts as worthy.