These O-Rings are used in drones for dampening vibration.
Just install between the spacers and flight controller to eliminate high-frequency noise.
3mm O-rings used to reduce vibrations reaching your flight controller.
Isolating your gyro from micro-vibrations. Mount above and below your flight controller mounting points for the best isolation.
Inner Diameter: 3mm
Outer Diameter: 6.5mm
Quantity: 10pcs per pack.