Extension Rings for D600

[Cage]

I've just acquired a rather nice Sigma 150/2.8 Macro with a MFD of 38cm. At times I'd like to get a little closer, so was looking at some extension rings.

What genuine Nikon rings will and won't work with my D600. I've googled this query and must admit I got confused with the varying answers I found.

I'd like to stick with Nikon branded rings after having a moment with some Chinese knock-offs refusing to dismount from my Pentax K20.

Thanks in advance.

PS: Full manual operation is not a problem