Compatible with EMS Woodpecker ultrasonic dental scaler 42000Hz Magnetostrictive Ultrasonic Scaler (PR-ZH1) Functions: 1. Painless and non surgical treatment for periodontal disease. 2. Painless and no uncomfortable feeling during and after scaling. 3. Able to reach, flush, cure periodontal pockets to a depth of 13mm in supragingival and subgingival curettage. 4. Preparation and flushing for root canal. It is a high tech and comprehensive equipment due to below: 1.We utilize Germany technology. 2.The vital parts are imported from Germany and Japan. 3.Unique 42000Hz frequency and strong ultrasonic flow in the world for super effective treatment. 4. Lowest vibration ( 0.02mm to 0.09mm )with painless and comfort for customers during the treatment 5. 5 working tips can treat perio disease, scaling, supragingival and subgingival curettage, root canal preparation and flushing. 6. Portability,safety and excellent Appearance with unique tech in China.