A drill’s first most obvious purpose is for making holes, but drills these days do much more. Ring’s End sells drills and drilling tools that drive a variety of fasteners. In addition, drills have been enhanced to make holes in difficult materials such as concrete and stone. The size of the drill chuck determines the maximum diameter bit that the drill can take. The typical sizes are 1/2-in., 3/8-in. and 1/4-in. Most drills come with an adjustable clutch for driving fasteners. Drills also come corded and cordless.