DALPROP 5045 Orange V2 Propellers 2-Blade Bullnose "Indestructible" 4XCW and 4XCCW Ideal for 250mm-310mm Quadcopter, Racing, FPV or RC Aircraft. Extreme Racing Performance. Genuine DAL Props Genuine DAL version 2 "Indestructible" propellers are the most advanced propellers designed for racing and FPV quadcopters. High efficiency design, DAL bullnose propellers uses an advanced tip design to decrease drag giving you a higher thrust per watt ratio. Well balanced, well-made and extremely durable, DAL propellers are now the world leader in racing and FPV propeller technology. DAL version 2 propellers have been redesigned to be flexible,stronger,light,more efficient and more forgiving. Perfect for all experience levels from a beginner learning how to fly to a professional league racer. If you want the absolute best performance for your racing or FPV multirotor, DAL propellers version 2 is your only choice.