Using these HQProp R36 FPV propellers is easy. First, make sure your drone is turned off. Then, carefully attach the propellers to the motors, matching the CW and CCW propellers to the correct motor positions as indicated in your drone's manual. When flying, keep in mind that these propellers work best in stable weather conditions. Avoid flying in strong winds or heavy rain. As for maintenance, after each flight, check the propellers for any signs of damage, like cracks or chips. If you notice any issues, replace the propeller right away. To clean them, simply use a soft cloth to wipe off any dirt or debris. Store the propellers in a safe place, away from sharp objects that could damage them.