The 1/4" Large Hooded Peep 37 degree helps reduce glare on clarifier and verifier lenses. It accepts all current ¼” verifiers, clarifiers, and apertures. The ¼” Large Hooded Peep accepts all 1/8” apertures, verifiers, and clarifiers with use of the Peep Reducer. The peep comes with a Peep Reducer and a Dual Aperture Wrench included. To protect your peep from dust, debris and moisture we recommend the Peep Guard.