These propellers come with DJI hub and can be used directly on DJI motors.
These propellers are filled with carbon fibers that make the product stiffer than normal slow flyer propellers. The props will have less deformation under load, and hence result in a more linear and responsive throttle response.
GemFan produces excellent propellers for airplane and multirotor uses, and they are available in a variety of colors and materials. They are all well balanced from the factory and provide excellent and smooth power. You will not be disappointed with GemFan products on your aircraft.