Item Name: 40A Dual Way Brushed ESC 5V-25V 2-6S for RC Racing Boat Car Tank 550 775 Engine. DescriptionSuitable for RC Racing Boat car tank 550 775 MotorAdaptation voltage 5v-25v (2-6 S available)Size: 50x30mmCurrent: Forward 40 to reverse 20 A (peak of positive tube 240A, peak of reverse tube 120A)Packing list1*Brushed ESC