DNZ Products Freedom Reaper Ring w/ Level Added 2 Screws per Ring 30 mm Black. 30MM ring with Level added-Black-2 screws per ring Specifications for DNZ Products 30MM ring with Level added-2 screws per ring: Manufacturer: DNZ Products Color: Black Finish: Matte Fabric/Material: 6061-T6 Aluminum Tube Diameter: 30 mm Base/Mount Type: Riflescope Ring Ring Quantity: Single Package Contents: DNZ Products 30MM ring with Level added-2 screws per ring DNZ Products 30RLE: 30MM ring with Level added-Black-2 screws per ring