Adapter does what it is supposed, as described. It is nice that he also includes an aerator. So can remain at the donor site of the adapter, even when the tube was removed. As sanitation expert, however I have to point out that a 1717 intrinsically safe actually to DIN EN by freewheel Basin Mixer is changed to the then possible hose connection to a non-intrinsically safe valve through this adapter. Thus (for example when filling a small Poole with water) the back eyes, back pressure and Rückkontaminieren of dirt is possible in the drinking water system. It would therefore be right and important to note that a hose with this adapter only via an intermediate threaded pipe interrupter with backflow preventer (safety combination) may be connected to the drinking water network in order to avoid contamination. Maybe you can offer as an accessory for the adapter such a device indeed. Then I would give 5 stars.