Burris Signature Zee Rings vs Burris Zee Rings

[rangerman]

Does anybody know the difference between the Burris signature zee rings and the Burris zee rings? I'm thinking it may be that the signature zee rings come with the extra 10 moa and 20 moa nylon inserts where the regular zee rings just have a o moa insert and no additional inserts. These both will be used on a weaver style base. Thanks in advance for your help.

 

[zuba]

The signature zee rings come with inserts and the zee rings are regular all metal rings. I have a set of 30mm zee rings that I will probably never use because I forgot the difference