30mm Signature Zee Rings Extra High Weaver Style Matte Finish by BURRIS OPTICSBurris Signature Rings set the standard by which all other scope rings are measured. They are the choice of most gunsmiths and serious shooters who want the utmost in accuracy and precision. ðBese solid steel rings not only provide tremendous gripping power and durability and they guarantee proper alignment and maximum scope-to-ring contact through the use of Burris patented Pos-Align Inserts system. Includes Signature Inserts