Dental Cavitron Ultrasonic Insert 25 kHz P-10 BONART 3-Piece Kit
The Bonart universal external water flow insert series (P-10) is a straight angled universal insert with an external water tubing that sits above the tip. The P-10 series is designed to be compatible with most major brand magnet scalers.  You will receive 3 inserts, as described in the picture.