Mamba X 25.2V WP ESC +1406-1900kV Comb Crawler SystemThis is the Castle Creations Mamba X Extreme 1 10 scale Waterproof ESC with the 1406 4 Pole 1900Kv Sensored Brushless Motor. FEATURES ESC; 2S 6S input voltage range Compatible with 1 10 1 8 scale vehicles weighing less that 9lbs (4kg), including many extreme 1 10 scale setups and 1 8 scale race buggies Smartsense uses motor's sensors for smooth starts, excellent torque and low speed drivability then transitions to the sensorless mode with electronic