DJI Spark – Quick-release Folding Propellers Powerful propulsion with a fold able, easy to mount, and durable design. Fold able and light.Push type design allows for quick mounting and detaching. Specifications Diameter × Thread Pitch: 4.7×3.0 inch (11.94×7.62 cm)Weight (single one): 2.5 g In the Box 4730S Propeller Pair × 1