The accessory for frothing milk, I choose it mainly for latte macchiato can become rather good at first it worked perfectly. Due to a defect in the tube (torn at the connection to the metal part) I have sent to repair it, which was replaced again really promptly and without problems. Since the function is somewhat restricted, for whatever reason, the nozzle spits more steam than frothed milk. Have there already several times variously checked, but without much success. But when it works sometimes, one has as a result a perfect macchiato latte layered. On the whole, therefore, a satisfactory accessory for Krups coffee machines.