Its a dual ESC. 1 unit, 4 motor wires. 8 wires total. 2+motor, 2-motor, BEC, 2-Power.
I just thought the two separate motor wires could be controlled separately with mixing but apparently it acts a a single unit just delivering equal power to both motors.
It's advertised for boats but think they mean boats with a rudder. They just didn't specify.
not where I got it but...
http://www.rcmart.com/quicrun-wp860-...Path=1560_1021