Using these Gemfan 2036 propellers is easy. Just attach the CW and CCW propellers to your drone according to the correct rotation direction. Make sure they are firmly installed before each flight. When flying, these props can handle high - speed racing and freestyle setups well. As for maintenance, after each flight, check the propellers for any signs of damage, like cracks or chips. If you find any issues, replace the propeller immediately. Keep the propellers clean by gently wiping them with a soft cloth. Store them in a safe place where they won't get bent or damaged. Avoid using them in extreme weather conditions as this can reduce their lifespan.