Features: brand new and high quality. This product can be used for various types of Bluetooth-compatible headsets. All soft artificial design, medical silicone ear caps. Soft, smooth and comfortable, the skin will not produce allergic effects. Applicable models: for trumpet (ie receiver) is 12MM diameter Bluetooth-compatible headset. Please confirm before buying this item. Specifications: Item type: Earbud Earphone Cover Material: Silicone Color: Semi-transparent/Black (shown as the pictures) Size:(Approx.) Internal diameter: 12mm/0.47in Applicable to headphones with a speaker diameter of 12mm Use for: Bluetooth-compatible earphone Quantity:1Set(1 Pair) (other accessories demo in the picture are not included) Note: Due to the difference between different monitors, the picture may not reflect the actual colorof the item. Thank you!! Compare the detail sizes with yours, please allow 1-4CM differs due to manual measurement, thanks! Package includes: 1 Pair(2Pcs) X Earbud Earphone Covers (No retail package)