Nescafé Dolce Gusto Rinsing Tool There is some discoloration due to age or use, but there are no problems with its use. This is a used item that has been used by an individual. Please refrain from purchasing if you are sensitive to such things. The Nescafé Dolce Gusto rinsing tool is a part used to rinse the main unit, clean off limescale, and extract room temperature water by setting it in the capsule holder. This prevents water from splashing and allows for safe cleaning of the machine. It can be used with all models.