These shape well and fits most brand. If the old buds are heavily, the sound conduction may be hindered, and you will be unable to hear the sound clearly. It is hard to give the diagnostics without the real condition, and worn out earbuds may hurt the ear and even cause hearing loss. Features -Color:Grey -Material:PVC -Size:2.00X1.00X1.00cm/0.79X0.39X0.39in - The replaceable earbuds for are supple and comfortable, better sound conduction. - The sufficient quantity are perfect for daily replacement usage, easily meet your needs. - The are made of PVC material, durable and useful, which are safe for people to use. - Simple in structure, easy to use, comfortable for wearing, useful and excellent, you can use it with confidence. - Can effectively reduce the vibration, easily isolate the interference from external noise, helpful accessory. Package list: 10 x