just replace the filter that is on the mixer by one supplied and that's all! we always leave and when you need to adapt a garden hose is clipped tip orange and gray top and plugs the pipe, this allows to water the garden, passing the hose through the bathroom window or kitchen when no one wants to tap dehors.Si you can leave the orange tip on the tap and the water flows through the small gray cap but less pretty. there are two tips provided rings: the largest is for valves which have a screw thread on the inside and the smallest for kitchen faucets said gooseneck with thread on extérieur.J'ai sought in DIY stores there 'was not equivalent because the systems are made for larger diameters.