UTG 1"/2PCs High Profile Picatinny/Weaver Rings BEWARE COUNTERFEIT PRODUCTS NOT SOLD BY Amazon.com Friendly Hex Screws with Retention Features and the Ring Diameter is 1" Full Length Locking Plate to Guarantee Easy Installation and Secure Fit. Fits All Picatinny/Weaver Rails Precision Machined from Aircraft-grade Aluminum Alloy with Anodized Black Matte Finish.ordable Price.