Vortex HS 30mm Pair Rifle Scope Rings are incredibly durable and stable, strong enough to withstand heavy recoil without throwing your scope out of alignment. Precision CNC machined from sintered steel, these Vortex rifle scope rings are built to last through several hunts, providing a secure shooting platform for the largest rifle scopes. The scope rings get a firm grip on your riflescope through a set of four T-15 Torx style socket cap screws, and the rings will permanently attach to a base, reducing the amount of times you'll have to zero in the scope. Vortex Optics has included a square recoil control key with the Vortex HS 30mm Diameter Scope Ring 2-Pack, which will create a non-slip, positive recoil surface to bear the brunt of recoil so the scope doesn't have to. What's more, the matte black DuPont powder coat finish will match the finish of your firearm and prevent the sun from glinting off the rings and giving away your position. For a stripped-down, highly effective pair of riflescope rings, you mount your scope using the Vortex HS 30mm 2x Recoil Key Riflescope Rings.