Worked great with a little superglue - NcSTAR Ring Insert Converts for 30mm Rings RIS

gives you alot of option for scope to ring combinations. the glue that holds the little cloth in came loose on all of them. had to superglue each of them
Pros: can use a 1" scope in the larger rings
Cons: the little cloth peices were all falling out

This review was written in the old system and had content requirements that are different than reviews written today.