Compatible with Insta360 X3 dual-lens cameras. Helps prevent lens damage, scratches during outdoor and action shooting It has a diameter of 34 mm and a thickness of 10 mm. To remove the lens guards use the provided prying tool. take care not to scratch the lenses as you remove the lens guards,upon removing the lens guards, apply new adhesives before placing back on your camera. Includes 1 pair camera lens guards protection for both front and rear lenses in the package.