"An advanced peep sight system, Specialty Archery Ultra Lite 37 Peep Sight Housing helps bowhunters who need more from their peep. Built to accept Specialty Archery's Apertures, Clarifiers, and Verifiers (not included), this peep sight helps bowhunters with vision challenges ensure they can see the target and sight pins clearly. Just 7.5 grains, this lightweight peep is built for a 37 installation angle. Designed to accept all 1/8"" clarifiers or verifiers from Specialty Archery to match the archer's needs. Non-reflective matte finish. Base for Specialty Archery's advanced peep sight system Peep sight that also accepts Specialty Archery's Apertures, Clarifiers, and Verifiers (not included) Built for a 37 installation angle Accept all 1/8"" clarifiers or verifiers to help deliver a clearer view Non-reflective matte finish"