These Plantronics ear bud packs are for use on the Plantronics Voyager 510 Bluetooth headset series.
The pack contains three ear buds in three sizes, small, medium and large and is great for people who want to freshen up their current Voyager 510 Bluetooth headset, or want to use them as spares or replacements. The old ear bud is very easy to remove and fitting a new one is just as easy.