- Nickel titanium rotary file used in dentistry. - Nickel–titanium (NiTi) show the phenomenon of superplastic where the stress remains constant, despite the increase in strain up till a certain range. - Their superplastic property is caused by the austenite transforming into the martensite form. - Length : 21 mm. - Size : 40 mm. **For Further product information , please contact Chat Support**