70% more flexible than other rotary NiTi files.* The proven design of TF significantly reduces file breakage and allows you to work with greater efficiency and confidence. Its sequence requires just 3 files for most cases. Its helical angle design and improved surface finish ensure fast, ideal canal shaping every time. Provides unsurpassed safety and ease of use.The TF technique requires just 3 files per case, perfectly matched to the type of tooth you are treating: one set for anteriors, another for premolars and molars.