Ultra lightweight peep sight weighs only 7.5 gr. Threaded to accept all 1/4" and 1/8" apertures, verifiers, and clarifiers (must use reducer with 1/8"). 37 degree peep should be used in bows under 40" axle to axle. Non hooded peep housing that will accept all current 1/4 inch verifieers, clarifiers, and apertures. Includes peep reducer and dual aperture wrench.