Specialty Archery PXS Target Peep Aperture Kit 5 pc. KitThe most advanced peep system in the archery industry, completely designed for ultimate accuracy. Increase your apparent magnification by reducing your hole size. Select an aperture size that will fit tightly around the scope housing when looking through the peep at the scope while at full draw. If you are using too large of an aperture, accuracy may suffer due to improper alignment of the scope and peep. If you are using too small an aperture, you