Master 4 Is A High Cutting-efficiency Files ✔️Excellent Flexibility And Memory Effect. ✔️High Cutting Efficiency Suitable For Continuous Rotation Movement. ✔️Triangular Cross Section Holds A Steady Core Strength Of The Instrument, The Centering Ability Gets Improved. ✔️Less Effort And Simplified Procedure To Achieve An Optimum Preparation. ✔️Safe Guiding Tip Can Lead The Instrument To The Apical Of The Canal, Which Avoids Canal Perforation And Transportation. • Kit Contains: 6 Pcs • Available In Assorted & Individual Sizes: (15-40 / Tapered 4)