Using your Klein Tools 53111 high-speed drill bit is a breeze. First, make sure you select the right drill machine for the task. Insert the bit securely into the drill chuck. When starting to drill, apply gentle pressure and let the bit do its job. This bit is great for a variety of materials like wood, metal, and plastic. Just adjust the drilling speed according to the material. For softer materials, you can use a higher speed, and for harder ones, go for a lower speed. As for maintenance, after each use, wipe the bit clean with a dry cloth to remove any chips or debris. You can also apply a light coat of oil to prevent rust. Keep in mind that the black-oxide finish helps reduce chip welding, but it's still important to use the bit properly. Avoid overheating the bit by taking breaks during long drilling sessions. And always wear safety goggles to protect your eyes from flying chips.