This is a precise fit for the following Chinese Gimbal.
It will also move the Gimbal/camera forward a little to avoid the signal/power outputs and also avoid getting the legs in view of the camera. I have tested this out, and it seems to work perfectly.
This product and/or service is not affiliated with, endorsed by or in any way associated with GoPro Inc. or its products and services. GoPro, HERO and their respective logos are trademarks or registered trademarks of GoPro, Inc.