This complete kit provides everything necessary to mount virtually any 1-inch scope! Alignment and lapping rings ensure maximum surface area contact between scope tube and rings. The Wheeler Alignment Bars, Lapping Bars and Lapping Compound allow you to achieve the perfect fit between scope and rings. Crosshairs that are not properly leveled will result in errors in left/right windage especially at longer distances. The Wheeler Level-Level-Level makes it quick and easy to get the reticle perfectly aligned with your gun. Securing fasteners properly is critical to accuracy. Precisely controlled torque along with thread locking compound will keep your scope held securely in place. Professional grade bits and the F.A.T. Wrench are the perfect combination to properly secure fasteners.