A rack of steel carbide burs, in a variety of sizes, is displayed. Place the bits in your power tool, and use them to rotate, smooth, shape, or sharpen. Used by professionals or by do-it-yourselfers, carbide burs are an important toolbox accessory.
Drill bits are made of various materials with different types of coatings. Low and high carbon steels are used in wood, and high speed steel is resistant to heat, and thus can be used at greater cutting speeds.