Image would be helpful. I don't recall any SKS fenders sold without black plastic breakaway connector - it's an integral part of attaching wire stays to frameset.

I recommend you contact SKS directly - they'd need a product number, or picture, to advise.

If you're always bicycling slowly I don't think need for breakaway component is critical; forested mountain descents are the primary scenario where this is a very good idea.

I've considered retrofitting these to VO fenders, but they probably will not fit the smaller diameter stay used by SKS.