Works well. Just use a hand drill. I seem to understand the conflicting reviews. I used this on a laminate door with chipboard inside. The bit tended to get clogged with thin wood shavings that I had to constantly clean. I moved the drill back and then forward again, and the drill. I don't blame the bat, I blame the cheap wood. I assume those who complained about the dullness of the hit used it on the chipboard. Those who said it was sharp used it on hardwood. I only had to drill two holes so this was a great economical purchase for me. I would never want to use it for a full set of these doors. It would be painful.