Use this aluminium clamp to attach a water bottle cage to your handlebars for easier access. Use this aluminum clamp to attach a water bottle cage to your handlebars for easier access. Water at the ready Water at the ready Bontrager's Handlebar Bottle Cage Clamp lets you easily attach a water bottle cage to your handlebars so your hydration is always within reach. All hardware is included and it mounts to road, mountain and city bike handlebars with a 31.8 mm diameter. Bontrager's Handlebar Bottle Cage Clamp lets you easily attach a water bottle cage to your handlebars so your hydration is always within reach. All hardware is included and it mounts to road, mountain, and city bike handlebars with a 31.8mm diameter. - An alternative water bottle placement solution for bikes without mounts on the frame Alternative water bottle placement solution for bikes without mounts on the frame - Cla...