This 2-in-1 Spektrum Speed Control and Receiver are combined in one unit for space-saving appeal. Plus, drivers have an adjustable drag brake for different terrain. This 2.5A Brushed ESC/Receiver gives your 1/30 scale vehicle the ultimate trail running experience indoors or out. The firmware is designed specifically for Axial® SCX30 crawlers, so you know you are getting a finely tuned piece of hardware at a cost-effective price.