Specialty Archery Verifier 9 Aperture 1/8"Verifiers are small lenses that can be inserted into the peep sight of a bow to provide clearer focus on the sight pins. They work by correcting minor vision impairments, such as astigmatism, that can make aiming a challenge for some archers. It's important to note that verifiers only improve focus on the sight pins, not on the target itself. So while they can be very helpful for archers who struggle with seeing the pins clearly Verifiers come in