Premium 1-inch Weaver Style See-thru High-pro Rings Precision Machined from Aircraft-grade Aluminum Alloy with Anodized Black Matte Finish 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