Featuring a foldable, easy to mount, and durable design, the propellers are foldable and light in weight. The push type design allows for quick mounting and detaching. The propellers are foldable to reduce the overall size of the aircraft for transportation with the propellers on. The propellers have a Diameter × Thread Pitch of 4.7×3.0 inch (11.94×7.62 cm). Package includes: 4730F Propeller Pair (1CW+1CCW) Compatible with the DJI Spark. Two packages required to replace all 4 propellers.