ITEM NAME:Rc esc 30a brush motor speed controller w/ brake for 1/16 1/18 rc car boat ta Gw Specification: Function: forward, reverse, brake working voltage: 4.8V---8.4V. Diaensions(L*W*H): 35.0*22.0*6.0mm Current(A): 30A Driver frequency: 2KHz Input: Li-Po 2S / Ni-Mh/Ni-cd 4-7cell Brake On / with brake This ESC can work with 130/180/260/280/380 Brush Motor Size:20*20 MM Package Includes: 1*Brush Motor Speed Controller.Current(A): 30A. This ESC can work with 130/180/260/280/380 Brush Motor. Driver frequency: 2KHz. Function: forward, reverse, brake. Brake On / with brake. Size:20 20 MM.