K and L frame
They have them, Carlo, if you mean Simply Rugged.
However, the K,L, and N frame holsters are under "Pancake," "Texas Pancake," or "Long Hunter."
The "Sourdough Pancake" is specifically for J-frames.
Just go to the SimplyRugged.com website, and open the link to the online store. You'll see the different makes.
If you have a 4" K or L frame, you will probably want the regular Pancake. You can get the Pancake with the inside out straps if you want; I just got one for my 13-3 3" K-frame. However, I don't expect to use it as an IWB very often; the straps and connecting hardware are detachable, and are currently in my gun safe.
Nice thing about the strap system - leave them on, and use as IWB, or take them off, and use the holster as OWB.