Zhiyun-Tech's TransMount series is a range of pro accessories for use with stabilizers. 

The TransMount Servo Follow Focus (Lite) is designed specifically for focus control and is intended for use with the Crane-3. It is also compatible with the Weebill Lab, although the TransMount Max is the better option for this stabilizer as it supports only one motor. Crane-3 supports two motors at the same time; ideally, you would use the slightly lighter TransMount Lite for focus control and the optional TransMount Max for zoom control. 

The ultra-slim TransMount Lite attaches on the gimbal via an easy installation system with hand-screw design - no need for tools. It can be controlled via the gimbal handwheel or the companion smartphone app. It is powered by a built-in lithium-ion battery and works with most DSLR and mirrorless cameras and lenses on the market. The servo connects to the gimbal with a USB Type-C connection for higher transmission rate to enable zero-latency follow focus. 

Compatible gimbals: Weebill Lab, Crane-3 Lab 

Zhiyun-Tech product no: CMF-03