SNIPER Air Rifle .22 30mm Integral Hi-Profile Scope Rings, 21mm Saddle Height/Up to 70mm Bell, DOVETAIL Precision Machined from Aircraft-grade Aluminum Alloy with Anodized Black Matte Finish Complete with Stop-pin for Rock Solid Application Ring Base Designed with Locking Hex Screws to Tightly Fit on Mounts with Airgun/.22 Dovetail Dimensions Reversible Locking Plate to Fit Full Range of Airgun/.22 Rails Fits standard .22 Rails 3/8"