Zhiyun Crane 3S Smartsling Handle comes with a TransMount SmartSling Handle.

Main Features:
1.Reengineered for More Ambitious Camera Setup
2. Extendable Roll Axis. Greater Flexibility
For larger cinema camera combos, users can attach an extension module  onto roll axis for more space, while for smaller DSLR combos, the extension module can be detached for greater portability.
3. Modular Design. Versatile Shooting
You can mount SmartSling handle featuring an intuitive control panel and OLED screen, for direct camera & gimbal parameter adjustment, or combine them together!
4.Cross-Compatibility.
The handle mods are easily separated and both provide multiple thread holes of different sizes to mount accessories.
5. Zero Swinging. Hero Security
The reinvented locking system can lock the three axes without noticeable swinging.
6. Continuous Uptime Supported by PowerPlus
7.Improved Zoom & Focus System
8. Properly Calculated 55°:Broader Vision
The properly 55° tilted roll axis is designed for unblocked view and allows enough space to mount large cinema camera combos.
9.Designed to Maximize Efficiency