Amazon.com: DJI Ronin-S Part 17 Focus Motor : Electronics
Amazon.com : DJI Ronin-S/SC Focus Wheel - Rotated Wheel to Control Focus When Using Cameras, Compatible with Ronin-S/SC Cameras, CAN/S-Bus Selector Switch, Camera Accessories - Black, CP.RN.00000008.01 : Electronics
Amazon.com : DJI Ronin Focus Motor : Electronics
DJI Ronin 4D 4-Axis Cinema Camera 6K Combo Kit CP.RN.00000176.01