Description For 970 520 RC Excavator Brand YI GONGItem Name M10 Origina Motor M20 Upgraded Motor M20 Drive Box Boom and Arm ShellNote The product comes with an M10 motor Upgrading to an M20 motor requires cutting and replacing the original robotic arm See the images below for details Alternatively you can purchase a new robotic arm from the linked product Package included 1 x Set
