These are universal vibration and shock absorbing mounting boards they come in a wide range of sizes to match your mounting and loads. The number of vibration balls and placement can be varied to achieve optimal performance as well as optional rated vibration balls can be swapped out. The possibility to use goes way beyond just camera gimbals from battery protection to motor isolation.
Specs:
Size: 142 x 142 x 21mm (Round)
Weight: 125g
Rating: 2000g (As shipped) can accept up to 20 balls and various ratings
Mounting: Various slots and holes for adaptability to a wide range of applicationsHobbyking