Lightweight, steel locknuts with nylon insert to prevent your props from coming off.
We recommend replacing all standard nuts and 'bullet' style prop adapters with locknuts. With all multirotor setups, half the props are spinning in a direction that tends to loosen a standard clockwise prop nut. These use a nylon insert that grabs the threads and prevents the nut from loosening and spinning off. This puts an end to the decision about how tight to crank down on the nut (tight enough to stay on but not so tight as to stress or crack the prop hub). They are also lighter than the pointy bullet style adapters that were primarily intended for aerodynamics in airplane setups.
We also believe this to be a superior solution over prop adapters with separate CW and CCW threads. The locknut performs the function without the need to restrict your motor to spinning in one direction or the other.
Package contains four (4) standard thread black M5 locknuts