High Quality Material Our action camera mount is made of strong and durable high quality plastic material. The curved and flat adhesive holders are sticky, waterproof. The high-quality super adhesive can be firmly attached to the helmet or other brackets to prevent the camera from falling off. The set includes: 3 x flat base and 3 x curved base, 6 x 3M tape to meet your daily needs of sports shooting. Size: red flat:39x48mm, black flat base:39.3x49mm, red bent:3444mm, black curved base:34.545mm. More comprehensive protection for the camera: the self-adhesive camera anchor in the GoPro helmet mount accessories can be used to pull the camera through the rope if the camera accidentally falls off, and attach the camera more firmly. These self-adhesive foam pads are viscoelastic, which makes the foam energy absorbing and stress relaxing. Application: the surface must be dry and clean to maximize adhesive contact. Press it for 1 minute to escape the air, it is better to stand 24 hours before use (if you are worried that the direct paste is not strong enough, you can use a hair dryer to heat the adhesive surface, which can make it firmer ) Wide application: the GoPro helmet mount can be widely used for skiing, cycling, mountaineering, cross-country skiing and other sports and is compatible with most sports cameras and cameras (eg For example: Gopro or DJI OSMO Action or YI Action Camera, etc.), free your hands.