This mount, with the easy-to-use Bar-Lock system, is a great choice for those of us who have several bikes, as well as for riders who don't want to keep the mount on their bike when the bag is not needed. Whereas the basic Ortlieb mount has a semi-permanent fixture, this Quick Release model is ready for adapting for any situation. - Tool-free mounting and dismounting - Made of strong polyamide - Max. load 5 kg - Suits handlebars with a diameter of max. 35 mm - Not suitable for carbon fiber handlebars - The front panel works as a reflector when the bag is not mounted - Ortlieb part number E241