Flexi-Post Fiber is made from proprietary, Epoxy reinforced, High strength S-Glass Fiber. During tap insertion and thread pattern creation, the stresses of insertion are absorbed by the tap (not the root) - virtually eliminating the major cause of root fracture. Vertical blades remove dentinal debris, enhancing ease of post placement. The highest fiber post in-tooth retention provides long-term clinical success. The ONLY fiber posts providing high retention WITHOUT the need for a bonding agent and provides the dentist with an easy technique and shortened chairtime. Threaded retention without insertional stress and the patented split-tap closes on insertion to deliver maximum retention with minimal stress.