Baby Nasal Aspirator Part for Transforming Mouth Type Nose Suction into Manual Type, use Negative Pressure Ball Instead of Mouth (Pressure Ball only) ?New type part for nasal aspirator-Use a negative pressure suction ball instead of parent's mouth suction to safely and effectively remove baby?s snot. No disgusting anymore. ?Hygiene - Using a negative pressure ball with 2 valves to suck your baby's nose, It is very healthy for you and your baby . ?Strong suction - After more than 25 trials, the suction provided by this negative pressure ball proved to be as strong as the mouth suction. ?Force is controllable - you can control the strength of the suction by the speed of releasing the negative pressure ball. ?suitability - Suitable for most mouth suction nasal aspirator. Just replace their mouth piece with this negative pressure ball