DJI Mini 3 propellers are quieter and have undergone precise dynamic balancing tests to enhance aerodynamic efficiency and powerful thrust.Propellers specially made for DJI Mini 3 produce less noise and have undergone precise dynamic balancing tests to enhance aerodynamic efficiency and powerful thrust.Follow the instructions and attach propellers to the correct frame arms.When changing propellers use the propellers in the same package. Do not mix propellers from different packages.