This is 2 pairs foam (4) ear cushions for use with Plantronics DuoPro Headsets (Plantronics H151, Plantronics H151N, Plantronics H161, Plantronics H161N, Plantronics H171, Plantronics H171N, Plantronics H181, Plantronics H181N)

Also works for the Plantronics Polaris versions: Plantronics P151, Plantronics P151N, Plantronics P161, Plantronics P161N, Plantronics P171, Plantronics P171N, Plantronics P181, Plantronics P181N

Note: Do not order these if your model is not listed.