This LOT is one piece of Used Harris 7-8GHz Isolator, Part Number: S7080A. Size: 0.88" x 0.88" x 0.75" excluding SMA Connectors. I don't have data sheet, but tested as follow specs (see plot):

This isolator can aslo work for 7-9GHz with less performance (loss at 9GHz is about 0.4dB)