You are bidding on a used pair of Southwest Microwave 2.4 mm (m) to 2.92mm (f) Adapters.  These are designed to work out to 40 GHz with a VSWR <1.15:1.  This also features flat in center of adapter body  for easy insertion/removal.  The model number is 101420-00SF.  More data can be found in the data sheets in the photo gallery.

 
As can be seen in the photos, the adapters are in great shape... the internal connector contacts are intact as well.

Domestic shipping is $5
Worldwide shipping is $15 via USPS First Class (limited tracking is available to some countries).

I can combine shipping on multiple items provided they close within a one week timespan (all items will ship at rate of most expensive shipping rate of any individual item).

Buyer's responsibility for any custom tax incurred. Kindly check your own country's tax duties.