KOOME 5045 Black V2 Propellers 2-Blade Bullnose Indestructible 4Xcw & 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 increases flight times. Dual 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, dual propellers are now the world leader in racing and FPV propeller technology. Dual 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 dual props are the only choice.