Brand new and high quality. Item Name:M3 anti vibration mounts for flight controller V2 upgraded. These Damping can effectively help to reduce the sensitivity of flight controller,is a must have item for every pilot who pursuit of extreme flight. Use for the newest F4 F7 flight controller on FPV quadcopter frame to anti vibration. Made of high quality rubber for lasting performance. WARNING:This toy is not suitable for children under three years old because of . Length: 0.6cm (0.24in) Width: 0.6cm (0.24in) Height: 0.66cm (0.26in) Colour: black Material: plastic Package Contents: 20 * Anti Vibration Rubber Damper Balls Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.