ITEM NAME:20A Dual Way Brushed Motor Speed Controller ESC for RC Truck Car 3-9.4V Description: RC Crawler Car Boat 20A Brushed Electronic Speed Controller ESC without Brake Forward, reverse 3.0V---9.4V working voltage This ESC can work with 130/180/260/280/380 Brush Motor 2KHz driver frequency Input: Li-Po 2S / Ni-Mh/Ni-cd 4-7cell Size Chart: Approx. 35x22x6mm/ 1.38x0.87x0.24inch Package Includes: 1 Piece RC Car Boat 20A Brushed Motor Speed Controller SKU: DMO0002055561014086.This ESC can work with 130/180/260/280/380 Brush Motor. 2KHz driver frequency. Forward, reverse. Size Chart.