T-Trees 40Pcs FPV Vibration Damping Balls Dual-head Anti-Vibration Rubber Ball For Gimbals Gopro DJI Quadcopter Aerial Photograpy Black Dual-head anti-vibration rubber ball,widely used in PTZ connection and FPV system 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 40 Pcs Black Vibration Damping balls (Max 200g)