Mizugiwa 1 Inch, High Profile, 11mm Dovetail, See-Thru, Scope Mount Rings Scope Mount Rings 1"inch diameter tube 3/4 inch gap between tube and top of rail perfect for cz 455 .22 long rifle Fit for ruger 10/22 .22 marlin Marlin XT-22 Remington .552 rifle