Sterile combination file, color coded according to the usual standard. Used to remove pulp tissue, as well as widen, smooth and clean root canals. The shape of a k-file is characterized by the fact that it resembles a Christmas tree. If you hold the file with your fingers, you can feel that it has slightly cutting edges when you move it back and forth. This means that they cut both when they are guided down the channel and back up. The head of the file is marked with a square. Also suitable for use in veterinary clinics.