This Roll Down Eyecup is identical to the eyecup originally equipped upon the Zeiss B/GA, 7x50 B/GA & 8x56 B/GA classic series binoculars.
As the description implies, this is one eyecup. You will need two of them to replace a pair of eyecups for a binocular, of course.
In the Box
Zeiss One Roll-Down Eyecup for the 7x42 B/GA, 7x50 B/GA & 8x56 B/GA Classic Series Binoculars (Replacement)