Burris Signature Rings set the industry standard for quality. They have a reputation for reliable performance in any weather or shooting circumstance. Proven design has stood the test of time. Solid steel rings, ideal for hunting, are available for all types of optics and bases. Pos-Align Inserts offer tremendous gripping power and durability and will not damage the scope finish. Available in 1-in. and 30 mm sizes that work with standard, dovetail, double-dovetail, and Weaver-style bases.