Garmin Adjustable Mounting Arm Kit Joints on VIRB mounts feature interlocking joints that grip in place instead of relying solely on tension. This provides a more rugged and durable, anti-vibration locking performance Joints on VIRB mounts feature interlocking joints that grip in place instead of relying solely on tension. This provides a more rugged and durable, anti-vibration locking performance Joints on VIRB mounts feature interlocking joints that grip in place instead of relying solely on tension. This provides a more rugged and durable, anti-vibration locking performance