The 85039A is a type-F calibration kit. But I have seen a kit marked 85039A-K07, consisting of just of 3 airlines of length 3.5, 5.5 and 12.5 cm. There are no open, shorts or loads, so clearly not a calibration kit.
Does anyone have a manual on this? I see no record of it on the Keysight website, so I'm even wondering if it was ever released as a product, or whether it was an HP internal part for verification purposes.