Sniper 1" High Profile Dual Cantilever Scope Dual Rings Mount High Quality 1" Cantilever Scope Mount for Dovetail (11mm) Rail Base Mount High Profile Dual Ring Mount that Includes stop pin for a tight, secure fit Ring Base Locking hex screws for precise fit on rails with Airgun/.22 Dovetail Dimensions Aircraft-Grade Aluminum Alloy Construction with Hard Anodized Black Matte Finish Reversible Locking Plate 38mm bi-directional offset provides options (mounts in either direction)