Stay ahead of the pack with this out-front mount that lets you add your bike headlight (sold separately) to a second bike or attach a compatible Edge (sold separately) to control the light while riding. The mount gives you easier, heads-up positioning for easier monitoring and safety. Includes mount and 2 shims. Compatible with 25.4 mm, 26.0 mm, 31.8 mm and 35.0 mm handlebars.