Flat and Curved Surface 3M VHB Adhesive Sticky Mount for GoPro Hero 1, Hero 2, Hero 3, Hero 3+, Hero 3 Plus, Hero 4 Camera - Black Compatible with GoPro Hero 1, Hero 2, Hero 3, Hero 3+ and Hero 4 cameras Made of high quality polycarbonate. The adhesive mounts are made with 3M adhesive. 3M's innovative VHB 4991 adhesive backing ensures the mounts stay put The flat adhesive mounts can be removed easily when heat is applied such as hair dryer Curved surface especially for helmet Package includes: Curved Mount x 2; Flat Mount x 2; 3M VHB Sticker x 4