This LOT is one piece of New (unused, but without original package) Weinschel 3.5dB Fixed Attenuator DC-12.4GHz 2W 50 Ohm with SMA Connectors. Part Number: 3T-3.5. 

Data sheet for 3T/4T Series Fixed Attenuator:

https://weinschel.apitech.com/weinschel/pdfiles/wmod3&4T.pdf