The key allows to unscrew tap filter holder in a simple and fast way for the subsequent assembly of the Hello Bidet special filter holder.

The key is suitable for three different sizes of filter holders (22mm – 24mm – 25mm - usually for basin and bidet) and it is also useful for the other taps at home (kitchen, second bathroom, etc) to allow periodic cleaning of the internal aerator from limestone and other impurities.

(The replacement of the tap filter holders with Hello Bidet filter is done only the first time you use the device. It allows the normal use of the tap, with water filtering, aeration and water saving. The Hello Bidet key cannot be used to screw the Hello Bidet filter holder that has to be screwed with the help of a graft as shown in the manual).