Ultimate Arms Gear Low Profile + High Profile Tactical Deluxe Machined Ruger Aluminum Dual 30mm Or 1" Premium Scope Rings - One Pair Fits Both 30mm Or 1" Diameter Scopes. Manufactured From T6 Aluminum Alloy - Black Finish Base Is Made For Ruger's Unique Style. Withstands Brutal Recoil And Provides Rock Solid Power 1 Low + 1 High Profile