Item Type: Eartips ReplacementMaterial: Memory FoamSize:Inner Diameter: 4.5mm/0.17inExternal Diameter:L: 12.5mm/0.49inM: 11.5mm/0.45inS: 10.5mm/0.4 inScope of Application: The Inner Tube Aperture Of This Product Is 4.5mm, Which Is Suitable For In Ear Earphones With 4.5mm To 5.5mm Sound Guide HolesPackage List6 x Eartips ReplacementManual measurement, please allow some errors.1Compatible With: The foam ear tips come with an industry standard 4.5mm/0.17in wide opening, compatible with the use of 4.5mm/0.17in to 5.5mm/0.21in sound hole headphones. 2Premium Material: The replacement eartips are made from slow rebound memory sponge material, provides additional noise isolation, ear stability and lasting comfort. 3New Look: The replacement eartips can breathe new life into your in ear headphones for any damaged, scratched, defective or missing earbuds. 4Perfect Fit: The soft memory foam changes with the ear canal and fits perfectly into any type of ear canal, perfect for securing headphones. 3 pairs of memory sponge earplugs, 3 sizes, 1 pair for each size; (each pair of L/M/S) 5Superb Craftsmanship and Small Size: Fine workmanship, delicate and compact appearance. Compact size, easy to carry, to provide you with a better headset use experience.