Wheeler Scope Mounting Kit Combo, 1" & 30mmThis complete kit provides everything necessary to mount virtually any 1 inch or 30mm scope the correct way. Proper scope installation is critical to the accuracy of your firearm. Alignment and Lapping of rings ensure maximum surface area contact between scope tube and rings. This not only helps the rings hold the scope more securely but also protects your scope from damage misalignment can cause. The Wheeler Alignment Bars, Lapping Bars and Lapping