Castle Creations Multi Rotor Expansion Pack 25A ESC without BEC.
•Designed for use in quad copters and multi-rotor applications
•Recommended for platforms pulling up to 25 amps and powered by up to 6S LiPo batteries
While pre-programmed for your Multi-Rotor, the QuadPack 35 offers industry-leading software functions and USB programming capability via Castle Link USB adapter should you require them (Castle Link sold separately).