ITEM NAME:40A ESC Brushless Motor Speed Controller RC UBEC 40A RC LJ.1 x 40A ESC For brushless Motor. Continuous Output Current: 40A. 4 maximum speed: 2 pole motor 210000 turn / minute, 6 pole motor 70000 turn / min, 12 pole motor 35000 turn / min. BEC:2A / 5V (Switch).