[SOLVED} Inductor smd.

[MasterT]

I have a module https://i.ebayimg.com/images/g/4IEAAOSwnHZYmuiJ/s-l1600.jpg
There are several smd inductors supposed to be installed, L2 -//- L6.  I can see, that L5 - L6 (left side of the picture, close to SMA output connectors) are replaced with 0-resistors, and its fine, but what bothers me is L2 - L3, both have 68X markings. Same time ohmmeter shows 50 ohms DC resistance.  Does that mean they are resistors as well? Why 68X, and not 510 or R51 or whatever resistors should be marked?

Edit: google search does help, just have to find right search pattern. "EIA96 or E-96 resistor series"