YWBL-WH Female to Female RF Adapter RF Coaxial Adapter BNC Female to SMA Female Type RF Connector Coax Adapter Test Converter 2Pcs

Rather a tight fit but may wear in with use, otherwise a nice product.

Only thing stopping a five was the finish of the adapter. It is difficult to insert and extract the BNC aerial from the adapter as the finish is poorI am sure will improve with useVery good value and well packagedVery fast delivery