Using the Klein 627-20 Tapping Tool is easy. First, pick the right tap size for your job according to the marked sizes on the tool. If you're forming new threads, just place the tap on the area and turn it slowly. When reforming burred threads, gently guide the tap to repair the damage. For cleaning out plaster obstructions, use the tap to break up and remove the plaster. As for precautions, always wear safety goggles to protect your eyes from debris. Don't force the tap too hard, or it might break. To maintain the tool, after each use, clean it with a brush to remove any dirt or plaster. You can also apply a little bit of oil to prevent rust. Keep it in a dry place when not in use.
