The Wheeler Picatinny Scope Rings 2 piece 30mm Medium feature drastically increased clamping force can be applied with a 6 hole version of rings. The retained lock nut securely attaches to pic rail. It also features an integrated anti-cant level swing out and flat top on ring for leveling with the ability to position anti-cant indicator on the rear ring or the front ring. These scope rings feature 6061 aluminum construction.
 
Additional Information
6061 aluminum construction with flat top on ring for leveling
6-hole ring design
Integrated anticant level swing out
Includes torx screws
Retained lock nuts that secure to pic rail