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
DJI Ronin SC Focus Motor Works with the Ronin-SC Focus Wheel to Control the Camera Focus Low Noise Design Original Accessories - AliExpress