The Burris Xtreme Tactical Signature Rings 1 in. 1.50 in. Height Pair deliver exceptional holding power with lighter weight for tactical shooters, featuring unique self-centering dual steel clamps with a full cross-through connection that ensures proper center on any width Picatinny rail while adding extra strength. Built with revolutionary Pos-Align Inserts technology in a tactical ring configuration, these rings guarantee perfect centering and maximum scope-to-ring contact for tremendous gripping power without damaging the scope finish. The design lets you virtually sight in your gun without moving the scope adjustments, while correcting misalignment caused by off-center receiver holes and bases or rings that are slightly off-center. No need for expensive tapered bases or shimming for thousand-yard shooting, and the rugged aluminum construction saves weight while mounting on Picatinny and most Weaver-style rails. Each ring set includes a thoughtfully varied set of MOA inserts, enabling precise cant adjustments at 0, 5, 10, 15, 20, 25, 30 or 40 MOA to suit your ballistic needs. With this pair from Burris, you gain dependable alignment, robust torque management, and a streamlined setup ideal for precision, long-range, and tactical applications.