?The Walkera Runner 250 Components Kit with Brushless Motor / Brushless ESC / Power Board / Devo-RX710 Receiver / Main Control Board includes all these high quality components for necessary replacement or upgrade. The brushless motor is powerful enough to provide constant high power for a stable and fast flight. Brushless ESC presents high reliability and impressive durability. Made of high-grade materials£¬ all the components are solid and durable for long-lasting use. And they all perfectly fit Walkera Runner 250. Don't hesitate to order now! It surely is worth buying!                                    Features             Designed for necessary replacement or upgrade<br> Powerful brushless motor provides constant high power for a stable and fast flight<br> Brushless ESC presents high reliability and impressive durability<br> Perfectly fit Walkera Runner 250<br> Made of high-grade materials£¬ solid and durable<br> Easy to install <br>                                                            Specifications             Material     PCB    <br> Weight     17.64oz / 500g    <br> Color     Black    <br> Dimensions     (9.84 x 7.09 x 3.94)" / (25 x 18 x 10)cm (L x W x H)    <br> Suitable For     RC Quadcopter     <br>                                                             Package Includes            1 x Brushless Motor<br>1 x Brushless ESC<br>1 x Power Board<br>1 x Devo-RX710 Receiver<br>1 x Main Control Board<br>