The mounting set for the Ultimate 6 handlebar bag models Classic, Plus, and Pro is a major setback for thieves. You can quickly and easily install the mount on handlebars with a diameter of up to 31.8 millimeters and attach your handlebar bag with just one click. The integrated locking system not only prevents the unwanted removal of the bike bag but also secures the lid of all compatible products from Ortlieb. Note: Not suitable for carbon handlebars!