I have used this type of bit for electrical work for the last 18 years. We tried every top brand, custom brand, and anything else we could find. The bits we use are $25-$30 each and aren't even in the same class as WoodOwl's triple cutters. It goes through wood like butter, it's much easier on the drill and operator, it leaves a clean hole even through a few dings, and it's just a great drill! This is the only drill we will be buying in the future.