Advanced peep system, completely designed for ultimate accuracy.
Center String Technology: located on center of bowstring – no L and R misses.
Optical Centered Technology:  Improved centration of lenses for ultimate accuracy.
Protected Lens Technology: Lenses protected by plastic on 2 sides prevents cracking.
Dual String Angle Technology: has both 37 and 45-degree string angles on the same peep housing.
Tool-less Aperture Technology.
NOTE:
PXS Target Peep Apertures, PXS Target Peep Clarifiers, and PXS Target Peep Verifiers fit into Specialty Archery PXS Target Peeps ONLY. 
NOT compatible with other Specialty Archery peeps.