Dovetail: 3/8 or 11mm Split: 70/30 Fixed: Yes Over Built for the task! The Warne Rimfire rings were created to fits both the 3/8th inch and 11mm dovetails found on many common rimfire rifles. Featuring a unique 70/30 horizontal split design, these steel rimfire rings are the best available. Rimfire scope rings from Warne Scope Mounts give incredible performance to your build. With these 722M 1-inch rimfire scope rings, we went overboard for over-the-top performance standards. Made in the U.S. with premium steel, they feature a 70-30 horizontal split that offers a particularly strong grip on your scope. They fit both 3/8-inch and 11mm dovetails found on many rimfire rifles. They feature a high height for handing scopes with larger objective bells.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }