The drill bits are cutting tools that are used to remove material to create holes. These drill bit sets do a pretty good job making holes in more than one material. It offers a perfectly round and smooth-walled hole as its sharp tip on bits make it easy to start the bit exactly where you need. This drill bit set is used for furniture making than a rough-and-ready hole made in framing lumber to fit a pipe or cable. They are great for wood, plastic, aluminum, and lite steel.