The document discusses Hu-Friedy's ultrasonic inserts for dental scaling. It describes the different types of inserts including Swivel, Streamline, Original Prophy, After Five, and Furcation inserts. The inserts come in 25kHz and 30kHz options and vary in tip size and shape for different applications. The document highlights features like ergonomic designs, water delivery options, and material composition. It provides guidance on power settings, use, care, and Hu-Friedy's satisfaction guarantee.