The BKL Technologies Long Dovetail Rings for 1in Scopes are made for shooters who demand stability. These Mounts and Rings by BKL Technologies are lightweight and made with high quality materials. Designed to fit standard 3/8in and 11mm dovetails, the BKL Technologies Independent Long Dovetail Rings are made for 1in scope tubes with an overall clamp and ring length of 0.60in. When you need rings as strong as your firearm, choose the BKL Technologies 200 Series Long Dovetail Rings.