Failed to load media. These drills are the perfect solution when you need something centered, precise and in the right place. I use them to install some shelves that had a very specific hole in the back so I had to fit perfectly. It's hard enough figuring out how to sell, but once you've done that, using self-centering beds was the best way to get it in just the right place, they're also great for hinges and other things that something like that requires precision in the perfect spot. . The drill bits themselves are of high quality, they fit any standard drill bit and the set has a wide range of sizes plus two regular drill bits as a bonus.