The 51466 Hurricane series was designed for agile flight at high speed with its incredibly low weight of just 4.2g. Compared to the 51499 Hurricane, the 51466 props have a smaller blade profile and excel in higher RPMs due to the lighter weight and smaller paddle width across the blade. The V2 provides a much better grip and smoother flight characteristics according to MCK who was a major part of the development of these props. Even though it’s light, the Hurricane is incredibly durable. Even if you bend a prop, there is a good chance you can bend it back and get back to flying. Ideal for freestyle and indoor racing.