"The Original OEM Yuneec Blades: Maintain your Yuneec warranty with OEM products. Brand new! Satisfaction guaranteed! Note: While these propellers will work with all Q500 Typhoon models as well as the Typhoon G, the propellers must be paired with the CCW version of the same model: i.e., YUNQ4K115B. This is because the profile of each propeller differs slightly.