The SmartTrack™ Reciprocating Files are compatible with the most common systems, like WaveOne™ and WaveOne™ Gold. The rounded non-cutting tip allows the user to safely follow the root canal shape. - Length : 25 mm. Pack contains : - 1 x 20/06. - 1 x 25/06. - 1 x 40/06. **For further product information, please contact Chat Support**