Aluminum Bike Handlebar Seatpost Mount for GoPro Hero Cameras - by Techno Accesory Compatible with GoPro HD, Hero 2, Hero 3, Hero 3+. CNC Machined 6061 T6 Aluminum. Fits all GoPro Cameras Weight - 24 grams, super light, super strong Clamp design allows for a multitude of mounting positions and angles Perfect for all bikes - includes an external padded strap for secure positioning