GoolRC Green ABS 5040 5*4'' CW/CCW Propeller Prop for Mini H250 H280 H300 Quadcopter Multicopter.<br> ABS material， when install them on their H250 H280 H300， the noise of the quadcopter can be very low and not that harsh.<br> <br> Features:<br> Distortion resistant<br> Low noise and high quality<br> Extremely lightweight and durable<br> These Propellers have set the gold standard for the Multirotors<br> Made of reinforced plastic， making them strong and very well formed<br> Known for their durability， great balancing and superb hub centering and expendable price<br> This propeller pair is supplied with contentric centering rings to ensure accurate centering<br> <br> Specifications:<br> Material: ABS<br> Color: Green<br> Length: 12.7cm/5.0"<br> Hub ID dia: 5mm<br> Hub OD dia: 10mm<br> Hub Dimensions: 6mm thick， 11.5mm diameter<br> Suitable models：QAV250/280/300 EMAX 250/280/300/H250/280/300MM<br> Rotation: clockwise and counterclockwise<br> <br> Package Information:<br> Package size: 13 * 10 * 1.5cm/ 5.1 * 4 * 0.6<br> Package weight: 29g / 1oz<br> Adhesive taps package<br> <br> Package List:<br> 5 * CW Propeller<br> 5 * CCW Propeller<br> 10 * Hub Adapters<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>