A once-attached expansion adapter automatically adapts to the size of the inner tube during installation and remains there inconspicuously. By simply pressing a button, the mudguard can be unlocked and reconnected, allowing the driver flexible use.Features:Fits to 27,5"- 29" mountain bikesFor fork inner diameter from 21-32 mm and 32-35 mm with included adapterInnovative magnet click connectionAfter a one-time adapter installation in the fork tube, the mudguard can be assembled and disassembled in seconds using the click systemMade in germany2 component mudguard with rubber edge protectionMatt-shiny finishMaterialPolypropyleneTpe-plasticSteelWeight150 g