These silicone earplugs hold their shape well and fit most stethoscopes. If the old earbuds are badly , they may block sound conduction and you will not be able to hear clearly. It is difficult to make a correct diagnosis without the true state! Therefore, it is highly recommended that you buy these replacement earplugs to make your diagnosis process easier. Feature - ColorBlack - Material: Silicone - Size: Upper aperture: 3.50mm/0.14inch; Lower aperture: 6.00mm/0.24inch - Applicable size: Suitable for 6.00mm/0.24inch stethoscope ear hooks, fit for most stethoscope the market, please pay attention to the size before buying. - Tip: Keep these small items from children under 5 to avoid . - Stethoscope accessories: These earplugs are suitable for most brands of stethoscopes, please check the size before purchasing. - Comfortable touch: The earbuds are made of silicone material, which is skin-friendly, soft, lightweight, and fits the ear. - Isolation of interference: Isolate external noise, provide better sound conduction, and doctors can concentrate more when using a stethoscope. - Protect ears: These earplugs can protect your ears and keep from cold metal, especially in winter. - Easy installation: The earbuds have self-stretching deformation function, which can be easily installed on the stethoscope. Package list: 10 x Stethoscope Silicone Earplugs