Signature rings are for the shooter who demands the best performance from his equipment. The benefits of this revolutionary design include consistent accuracy, tremendous gripping power and scratch free and stress free mounting. By putting a synthetic pivoting insert within a steel outer ring, your scope-to-ring surface area contact becomes virtually 100%.Burris Signature rings set the industry standard for quality. They have a reputation for reliable performance in any weather or shooting circumstance. Features: Solid steel rings, ideal for hunting Pos-align inserts offer tremendous gripping power and durability and will not damage the scope finish Works with standard, dovetail, double-dovetail, and Weaver-style bases Proven design has stood the test of time Covered by the Burris forever warranty Virtually sight in your gun without moving the scope adjustments Corrects any misalignment caused by receiver holes drilled off-center Corrects for bases or rings being slightly off center Makes expensive tapered bases or shimming for 1000 yd shooting a thing of the past