Compatible with DJI Phantom 4 Standard Quadcopter 9450S Quick Release Propellers (Spare Part NO.51 Propeller Mounting Plate) onlynEasy to install, Reliable locking, tool-free,Very easy to mount and releasenThese components will be the best choice for you as an replacement.nThese components are optimally designed to minimize wear between the propellers and the base,so as to extend the life of propellers.nPackage include: 1 x Installation Kit (Only installation kit for sale,the motor just for reference,not included!!!)n