RS2205 CCW Black Motor/Prop Nuts for CW motors
This Motor/Prop nut is designed for RS2205 motors that spin clockwise and contain a counter clockwise thread. As the motor spin clockwise, the nut will tighten down the propeller. This nut is specifically for M5 screws threads, so any motor you have that shares the same thread will work as long as the thread is counter clockwise.
Recommended to use a #8 ratchet wrench to screw the nut down, the nut also contains a washer at the top of the thread to be bitten down on the thread of the bolt from the motor shaft and prevent slippage or loosening from vibration.