1. It is designed to clean and lubricate the handpiece 2. 3 handpiece can be cleaned and lubricated at the same time 3. The Care 3 Plus swing pinion can clean and lubricate the handpiece efficiently in different angles 4. You can press the Air Button to clean the rest oil after cleaning and lubrication 5. You can fill the oil in different mode, such as short, medium and long mode, according different kinds of handpiece 6. The oil mist filter cotton can prevent the spread of oil mist to the minium degree