DAL 5045 Blue V2 Propellers 3-Blade Bullnose "Indestructible" 4XCW and 4XCCW Ideal for 250mm-310mm Quadcopter, Racing, FPV or RC Aircraft. Extreme Racing Performance. Genuine DAL Props GENUINE DAL PROPS High-End V2 Series, Features Faster Reaction, Easier Cornering even more Efficient and Less Noise. HIGH EFFICIENCY DESIGN, DAL T5045 Version 2 Propellers uses an Advanced Tip Design to Decrease Drag Giving You a Higher Thrust per Watt Ratio. EXTREMELY DURABLE, Well Balanced and Very Well-Made, 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.