Using your Milwaukee M12 FUEL 3/8 Inch Extended Reach Ratchet is easy. First, make sure your REDLITHIUM™ battery is fully charged and properly inserted into the tool. Then, select the right fastener that matches the 3/8 - inch drive of the ratchet. Place the ratchet onto the fastener and start using it to turn the fastener. You can use it in tight spaces thanks to its extended neck and slim head. When you're done, remove the battery to avoid any accidental activation. As for maintenance, keep the ratchet clean. Wipe it down after each use to remove any dirt or debris. Periodically check the POWERSTATE™ brushless motor and the REDLINK PLUS™ Intelligence system for any signs of damage. If you notice any issues, it's best to take it to a professional for repair. Store the ratchet in a dry place to prevent rusting and ensure a long - lasting performance.