This is a fix/replacement part for the Breville BEC430TTN Nespresso Pixie Water Reservoir not outputting any water due to the water reservoir plunger not being depressed properly from the base of the machine. This part is placed in the water reservoir input tray in the back of the machine and adds about 5mm of height to the protruding part to allow the reservoir plunger to depress enough to release water. Our machine arrived malfunctioning like this so I'm not sure if this is a replacement part or a fix.
The author marked this model as their own original creation.