30mm scope ring mount for Picatinny/ Weaver Rail (20mm)Riflescope Rings sturdy and tight to the rail and scope, comes with an Allen wrenchBuilt-in tape design to prevent the ring from sliding and holding postion accuratelyScope rings are for standard scopes 25.4mm scope tube/flashlighHigh profile( Item height: 2"),The height from the center of the riflescope tube to the picatinny base is 1.14 inches (29 mm)