The Arri WCU-4 FIZ/Camera Controller is the perfect follow focus with 3 axis, and has camera controls for ARRI brand cameras.
 
What's Included:
Arri WCU-4 FIZ/Camera Controller
3x Cforce Motors
15/19 brackets
Gears 
5x Lbus cables (2 long 2 short 1 med)
8x Marking Discs
1x lanyard complete
1x case fited foam