I appreciate the link, but I don't know which would fit the mk012's
Just measure the Oktavas mic diameter - you'll find it's right around 20mm (I know b/c I used to run them). Per the archives, the DPA UA0896 or Shure A81WS are also both right around 20mm and will fit the Oktavas well and work just fine.
I did a search and nothing came up for windscreens and the mk012s.
Windscreens (for the most part) aren't custom-made for mics, which is probably why you didn't find anything specific for the Oktavas.
For seriously windy, blustery conditions, I recommend the Shure's even though they're a bit more expensive. For normal wind conditions, the DPAs are great, too.