Ultra-strong, super light aluminum brackets that mount separately for use on more than one bike. Swap the bag from bike to bike quickly and easily. Won't slip, shift or move and safely supports heavy gear including DSLR cameras. One mount fits Arkel's Big or Small bar bag. Interchangeable depending on your ride needs. Fits bars from 22,2 mm to 31,8 mm. + Can be used for Arkel Large Handlebar Bag/Black, part ID 19123Arkel Large Handlebar Bag/Red, part ID 19124Arkel Small Handlebar Bag/Red, part ID 15289Arkel Small Handlebar Bag/Black, part ID 15330