What rings are these ?

[Keithjohn]

These fit on my tikka 658 other than the recoil lug . Any thoughts ?

 

[stubblejumper]

Possibly Warne or Talley.

 

[double gun]

Warne maxima rings - for what model I can't say. My guess would be a cz.

 

[DMS1]

These look like a Warne knock off. The recoil key is cast or machine into one half of the split ring only. All of the warne I have seen have the recoil key all the way across. They are more like the warne QD, made from 3 pieces, so you can remove the scope and re-install it easily unlike the 2 pic split rings. They are "universal" but for use on a piccatinny rail to hold the recoil lug.