ITEM NAME:Brushed ESC 20A Li-Po 2S with Brake for RC Crawler Car Boat Tank, Can Work with ' Description: RC electric speed controller is suitable for rc car boat tank. High simulation accessory, which will make your rc car look cool and attractive. Quality materials and with exquisite workmanship, durable for long term use. Can work with 130/180/260/280/380 brush motor. Function: forward, reverse, brake Specification: Material:Composite Material Working Voltage: 3.0V---9.4V Current: 20A Driver Frequency: 2KHz Input: Li-Po 2S/Ni-Mh/Ni-cd 4-7cell Constant Current 20A Max 25A