Keysight 5062-4073 Rack Mount Flange for units with Handles – 5U, 221.5mm, 8.75″
Agilent HP Keysight 84905M-024-101 Step Attenuator, 60 dB, DC-50GHz 2.4mm Female
This item is a Keysight HP Agilent 84905M with options 101 and 024, Programmable Step Attenuator, 0-60 dB, 2.4mm Female connectors.
Keysight/Agilent 8491 Series 4 Attenuator Set (3dB,10dB,20dB,60dB) DC-18GHz
I checked the frequency performance for 3dB,10dB and 20dB. about 45dB.