Designed for use with Burris Signature Rings, the Burris Optics Signature Pos-Align Offset Inserts Gunsmith Kit contains 60 inserts and allows you to align your riflescope without resorting to windage and elevation adjustments. These inserts ensure proper centering and maximum scope-to-ring contact, which improves gripping power without damaging your scope's finish. They can also be used to correct misalignment caused by off-center receiver holes or off-center bases or rings.