After using this set with my DeWalt 1-3/4 SDS max drill the set performed adequately. My drill is a bit much for these bits, I had to turn the torque down in order to not destroy the bits. After using the bits the threads on the hole saws were chewed up slightly. Overall these bits are great for light to moderate use. They are at a great price compared to similar other brands. I also was using them on extremely hard brick. They cut the brick like warm butter leaving a nice smooth round hole.