Click your bike computer on the top with the included Garmin or Wahoo adapters, and your GoPro to the bottom, and you're ready to go! - Compatible with 35 mm, 31.8 mm and 25.4 mm handlebars - The computer and camera lock into the mount with a quarter-turn mounting system - Weigh: 56 g - What's in the box: - CM06 bike computer - Adapter plates (for 35, 31.8 and 25.4 mm handlebars) - GoPro adapter plate - Allen keys needed for attaching to handlebar The separately sold Fenix ALD10 GoPro adapter allows mounting the separately available Fenix BC26R bike light at the bottom instead of a GoPro.