- M3-Pro gold is a series of multiple sequence files that applied with the most advanced metallurgy technology. - The gold heat treatment enhances the flexibility and resistance to cyclic fatigue. - Its convex triangular cross-section increase the cutting efficiency and preserve the detin as well. - It can cover the needs of 95% clinical cases especially those curved canals. - Length : 19mm. - Color : Yellow. - Size : 17/12. **For further product information, please contact Chat Support**