Produced with Sybron Endo’s proprietary R-Phase™ Technology resulting in NiTi files that are 70% more flexible and 2-3 times more resistant to cyclic fatigue than other rotary files. This special technology also enables TF to maintain the natural anatomy of the canal better than other files. The TF Technique is just 3 files per case perfectly matched to the type of tooth you are treating — 1 set for anteriors another for premolars and molars.