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 Covered by the Burris Forever Warranty™

Features:

1" rings 

Come with "0" (zero) inserts. 

Offset Insert Kits (item 626019) are sold separately and come with the following. Pos-Align Offset Insert Kits include one each of the
following inserts:
+5 and –5 (equal to +/– .005”)
+10 and –10 (equal to +/– .010”)
+20 and –20 (equal to +/–.020”)
By combining the various sizes, you can achieve from
.005” up to .040” total offset within your rings.

30 mm rings come with two sets of "0" (zero) inserts and two sets of +10 and –10 (equal to +/– .010”). These are the only insert sizes available.

34 mm rings come with two sets of "0" (zero) inserts, one set of +10 and –10, and one set of +20 and –20.
*420554, 420556: Come with a spare set of clamps designed to fit 11mm dovetails. 11mm clamps are stamped with the letter A.