Maillefer hand files by Dentsply are the pinnacle of precision Swiss engineering. These endodontic files can cut every channel, even those severely curved or highly calcified! K-Files are available in 21mm, 25mm, and 31mm lengths; C+ Files are offered in 21mm and 25mm, and Flexofiles come in 18mm, 21mm, 25mm, and 31mm lengths.