I would not use these on a scope in fear of damaging the scope. I ordered 2 rings and I kid you not they did not match. They had different size screws and bolts. Looks like they were made at a different factories. I am very disappointed I purchased a vortex viper scope with these wrings and will be purchasing a set of wrings from a different company.
Cons: poor design
This review was written in the old system and had content requirements that are different than reviews written today.