ITEM NAME:20A Bustophedon ESC Brushed Speed Controller For RC Car Truck Boat I4U1 20A Bustophedon ESC Brushed Speed Controller For RC Car Truck Boat I4U1 Features: 100% brand new and high quality Quality can be greatly ensured. Professional Speed controller. 20A ESC Brushed Speed Controller For RC Car And Boat It's Brushed bustophedon ESC.(forward,reverse) Specifications: Current(A):20A BEC 5V 1A PWM: 8K Input signal : PPM Driver frequency:2KHz Li-Po: 2S Ni-Mh/Ni-cd: 4-7cell Constant current 20A Max 15A