The Viessmann 7883995 Cleaning Spatula with three replacement blades is a maintenance tool designed to assist with cleaning and removing stubborn deposits from suitable heating system components. Its scraping edge helps loosen accumulated dirt, residue, and buildup from surfaces during servicing. It can be useful for maintaining compatible boilers, heat exchangers, and other heating e... https://www.partshnc.com/7883995-viessmann-cleaning-spatula-w-3-replacement-blades