EdgeEndo® FireWire™ NiTi files are a revolution in rotary files. Fully compatible with the system you already use, but better. Our files surpass all other files in resistance to cyclic fatigue* , and offer flexibility never before experienced in a file. FireWire™ NiTi enables EdgeEndo® files to not "bounce back," preserving canal anatomy, dentin and carefully follow the canal as they go down smooth and easy.