Using these Lenox METALWOLF reciprocating saw blades is easy. First, make sure your saw is turned off and unplugged. Then, insert the blade securely into the saw according to the saw's instructions. When you're ready to cut, hold the saw firmly and start the saw. Apply steady pressure while cutting. Remember to wear safety goggles to protect your eyes. As for maintenance, after each use, wipe the blades clean with a dry cloth to remove any metal shavings. Store the blades in a dry place to prevent rust. If you notice the blades are not cutting as well as before, it might be time to replace them.