DALPROP 5045 Purple 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 effiency 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, If You want the absolute best performance for your racing or FPV multirotor Dal props are the only choice.