Using these Lenox reciprocating saw blades is easy. First, make sure your saw is turned off and unplugged. Then, securely insert the blade into the saw's blade holder according to the saw's instructions. When cutting metal, start at a slow speed and gradually increase as needed. Always wear safety goggles and gloves to protect yourself from flying debris. After use, clean the blades with a dry cloth to remove any metal shavings. Store the blades in a dry place to prevent rusting. Avoid using the blades on materials they're not designed for, as this can damage the blades and your saw.