Comfort Coupling Set,Pack of 2 Hearing Instrument Domes 10/12mm Double Dome With Adaptor and Tube for Prompt SP BTEProduct description✔Comfort Coupling Set✔Premium Quality Super Soft Silicon Ear Tips Hearing Aid Domes For all BTE Behind The Ear Device.✔Comes With Adapter And Tube.✔Compatible with Siemens, Phonak, Resound, Unitron and all Branded Behind the Ear Hearing Aids.✔ Comfort Coupling Set Includes 2 Hearing Aid Double Domes with One Adapter and One Tube.✔ Super Soft and comfortable Ear tips.✔ Pack of 2 Double Dome of Size 10/12mm✔ Original Replacement eartip for Siemens Signia Prompt SP Hearing Aid.✔ Can be used with any hearing aid for more comfort and perfect fit. Size represents Diameter of the Dome, so please confirm before placing any order.