Based on this product's specifications, here are some alternatives and similar models
Handle for Cinewind CW30 by Nitecore — accessory mounting handle
Summary description:
Replacement or accessory mounting handle designed for the Nitecore Cinewind CW30 device. Provides a secure grip and attachment point for easier handling and positioning of the Cinewind CW30. Suitable for use when transporting, operating, or installing the Cinewind unit; helps improve control and ergonomics during use.