- Gold-flex rotary files. - Increased fatigue resistance of the file. Pack contains : - 1 x 20/10 - 19 mm. - 1 x 15/03 - 25 mm. - 1 x 20/04 - 25 mm. - 1 x 25/04 - 25 mm. - 1 x 30/04 - 25 mm. - 1 x 35/04 - 25 mm. **For further product information , please contact Chat Support**