Ergonomically designed, focused spray inserts. Innovative one-piece design allows the users fingers to naturally conform to the grip. Larger grip diameter lessens muscle load and pinch force. Rippled grip texture and special shape is designed to lessen the chance of slipping. PoWERline - provides increased scaling and plaque removal with less water. SlimLINE - for gentle subgingival ultrasonic instrumentation. Almost as slim as a periodontal probe and access deep pockets. THINsert- tip diameter 47% thinner than SlimLINE with excellent access and superior biofilm removal.