DALPROP 5045 Green V2 Propellers 3-Blade Bullnose 4XCW and 4XCCW=8 Props, Ideal for 250mm-310mm Quadcopter,Racing,FPV, 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.