These propellers were exactly what I needed for my drone. As a result of using this product, I found that my quadcopter runs smoother and quieter. The quality of these propellers is top-notch and they have held up well after multiple flights. They are also very easy to install, making the process hassle-free. The only downside is that they are a bit expensive compared to other brands, but the quality makes up for it. Overall, I highly recommend these propellers for anyone looking to upgrade their drone's electronics.