ESC - SODIAL(R) 2Pcs 320A Brushed Brush Speed Controller ESC /w Reverse for RC Car Boat 1/8 1/10 This equipment used in electric model car, and according to the following the information of choice scope configuration. automatically find the center. high-frequency drive system The use of low-resistance field-effect inner tube With forward and backward functions for car, boat Great budget speed control upgrade from mechanical.