The Rotating Flat Surface Mount from Contour allows you adjust the angle of your Contour HD & then lock into place. Slide the camera onto the TRails & find your desired angle with the ratchet type rotation. Once in place, push the lock button to securely hold your camera in a slip-free position, then youre set to start filiming without worry that the camera is going to change up the angle on you. Features Easy on with the T-Rail system Solid ratchet type rotation lets you set the perfect angle Easy to push locking button confidently holds your camera In the box Rotating Flat Mount with Adhesive Spare adhesive