This is my second drill. The first was enough for many, many holes. It cuts faster than Bosch bits and others that use a more typical bit profile. Let the beat slice at its own pace (which is pretty fast) and don't let it overheat and it will surprise you. Update: This doesn't look like my first bit, firstly no SDS, secondly horrible carbide. I entered the concrete 2 inches, the tip was almost worn out. I used a Dewalt puncher. I now have a nice piece of spiral flute steel to use as part of an art project. Zero rating would be better.