I would have not purchased this brand had I not already purchased this brand before. The other one came with the bit. I did not want to start over, and I am no pro to know if the bit would work with another brand or not. It did the one hole I needed. If I would have known better, I would have started from the top and when it slowed. Finished by moving from the bottom, up. It was not a clean cut when it came out of the bottom. Possible because I was pushing downward.
Rating: [4 of 5 Stars!]