About this item USES: Wide range of uses. Eartip has a bore size of 5.5 mm. Fits most earphones with soundport nozzle 6 mm ~ 7 mm. QUANTITY: The package includes 2 pairs of silicone replacement eartips (4 pieces). DESIGN: Premium soft silicone eartip that swivels, providing outstanding and lasting comfort. Sound isolation and high-intensity listening. In-ear stability. Flexible, removable, reusable, and durable (much more durable than foam ear tips). Perfect replacement for your stock earbuds. Product dimensions: 0.5 x 0.5 x 0.4 inches.