I would not use the Arkansas stones on your razors. Some people have done so but they are not really suitable for a Str8.
There are much better stones available.
Forget about the Zeepk razors, they are made of very poor quality steel that gives a poor, scratchy shave and does not hold an edge. Usually the grinding is also "off".
The 12,000 stone is a finishing hone. For vintage Ebay razors you should have 1000 grit wet/dry sandpaper, to remove the old oxidised steel on the edge and remove nicks, a 4000 hone to establish the bevel, the 8000 hone to refine the edge to shaving sharpness and then something finer to finish off the edge.
Hope this helps,
Originally Posted by kimo
Randy Tuttle, a resource for straight razor users in Minnesota.