GoolRC 40Pcs 200g FPV Vibration Damping Balls for Gimbals Gopro DJI Quadcopter Aerial Photograpy Black These are universal vibration damping balls that can be used in a number of applications from gimbal isolation to protecting sensitive electronics. They match perfectly with our wide range of isolation mounts and are available in a number of grams per ball vibration ratings identifiable by colors.