Using these Gemfan propellers is easy. First, make sure your micro drone's motor matches the recommended 1103 - 1105 motors. Then, carefully attach the CW and CCW propellers to the corresponding motor shafts. When flying, be aware that these props provide great thrust, so start with gentle controls. For maintenance, after each flight, check for any signs of damage like cracks or chips. If you find any, replace the propeller immediately. Store the props in a cool, dry place to prevent warping. Avoid using them in extremely wet or dusty conditions as this can reduce their lifespan. With proper use and care, these props will keep your drone performing at its best.