| ID/OD: 25*27mm |
| ID/OD: 24*26mm |
| ID/OD: 28*30mm |
| ID/OD: 30*32mm |
Cheap price Disposable Medical Spirometer Mouthpiece
Spirometer Filter
Spirometer Paper Mouthpiece
Spirometer Printing paper
CHH-SA10
| ID/OD: 25*27mm |
| ID/OD: 24*26mm |
| ID/OD: 28*30mm |
| ID/OD: 30*32mm |