30mm-31.8mm Standard Bike Motorcycle Handlebar Mount Seatpost Aluminum Mount for GoPro Hero 1, Hero 2, Hero 3, Hero 3+, Hero 3 Plus, Hero 4 Camera - Blue Compatible with GoPro Hero 1, Hero 2, Hero 3, Hero 3+ and Hero 4 cameras Fits around any bar from 30mm-31.8mm in diameter. Securely attaches camera housing to handlebars, seatposts, ski poles etc CNC machined from 6061-T6 aluminum Captures point-of-view perspective from vehicle. Great way to take shots of yourself or of people following you. Clamp design allows for a multitude of mounting positions and angles Package includes: Bicycle Handlebar Mount x 1