Bundled glass fiber-reinforced resin post Core build-up restorations with root posts for endodontically treated teeth. Innovative bundled fine posts enable easy placement within any root canal morphology. Minimizes the need to mechanically prepare root canals pre-serving healthy tooth structure and saving valuable chair time. Increases surface area within build-up restoration maximizing adhesion and retention values. Optimal adaptation to all canal anatomies for better ease-of-use. No.4: - ø 0.8mm