Using the Greenlee 33L - 1/2 spade bit is easy. First, make sure your power drill is 1/4 - inch or larger. Insert the bit into the drill and tighten it properly. When you're ready to start boring, place the bit on the surface of the hardwood, softwood, plywood, or drywall. Then, turn on the drill and apply gentle pressure. The self - feeding design will help the bit move through the material smoothly. If you need to pull wires, use the hole at the top - center of the bit. As for maintenance, after each use, clean the bit with a dry cloth to remove any wood chips or debris. Store it in a dry place to prevent rust. And always wear safety goggles when using this bit to protect your eyes from flying particles.
