2x Flat Mounts + 2x Curved Mounts 3M adhesive pads for GoPro HD Hero 3 2 1 Please note this is not OEM, it is just a third party product compatibles with Gopro Two pieces of Curved Adhesive Mounts which ensures that the camera stays stable on a helmet or another curved surface. &gt;When you need to grab a few more the GoPro Curved Adhesive Mounts are the proper replacements.