Inner diameter: 3.5 cm Inner dimensions: 1.6 cm Outer diameter: 5.3 cm Thickness: 9 mm Material: foam / plastic Weight: both ear cushions together 4 g Colour: black Compatible with the following device models: Plantronics SupraPlus Savi W710 Plantronics SupraPlus Savi W720 Replaces the following original accessories: Plantronics 38310-01 Plantronics 38310-25 Plantronics 67712-01 Plantronics 0017229119000 .
eBay