Package includes: 2 sets adult and pediatric replacement diaphragms include 2 adult diaphragms and 2 pediatric diaphragms, and 8 stethoscope replacement earplugs, convenient for you to replace | Reliable to use: stethoscope ear tips with the properties of sound insulation are comfortable for you to use, and the earplugs can be firmly cover the end of the ear tubes | Suitable for: stethoscope diaphragm replacement can be applied to stethoscope, suitable for both the adult and pediatric sides | Quality material: stethoscope replacement kit is made of reliable silicone material and is inspected strictly, light in weight and can deliver sound well | Note: stethoscope replacement earplugs are suitable for 5 to 6 mm ear hook instruments, please note whether it is applicable before purchasing