Ultimate Arms Gear Tactical Deluxe Machined Ruger Aluminum Low Profile 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 Rails Withstands Brutal Recoil And Provides Rock Solid Gripping Power Low Profile