The PolarPro Lens Cover/Gimbal Lock for the DJI Phantom 3 Pro, Advanced, 4k, and Standardprotects the gimbal and camera during travel. The lens cover pushes onto the gimbal, locking it in place to prevent damaging movement. The lens cover also fits over PolarPro filters when installed. The lens cover protects filters, and the camera lens from bumps and scratches. The Phantom 3 lens cover is constructed out of a soft-touch glass filled nylon. Make sure your Phantom 3 is undamaged and ready to fly with the PolarPro Lens Cover and Gimbal Lock.