Specialty Archery Podium Peep BlueThe Podium peep is a machined aluminum peep featuring dual string angle grooves 37 degree and 45 degree and is threaded to accept podium apertures and peeps shade Center string technology is located in the center of the bowstring for no left and right misses Protected lens technology keeps your clarifier or verifier protected on both sides Optical Centered Technology Improved centration of Podium Peep Clarifiers and Verifiers for ultimate accuracy