I doubt they are anything special. Have you checked for any marking, for example are they alps(brand) or P&G(other major brand) faders?
10Ka = 10K audio taper or Log(in U.S )
B100K = 100K linear (in u.s.)
A&B Reverse what kind they are in europe for some reason that I am sure someone else can explain.
Not sure what you mean by right module but those are the values. I suspect you can put in some 100mm faders from "name a brand here" and be o.k. unless you need stereo faders or something else.
As for where to purchase oem faders, try digikey, mouser or newark electronics.