InSight™ Peep System – Housing with six (6) apertures. Our InSight Standard Peep Kit is the last aperture kit you will ever need. With our Light Baffling Technology in our 14 grain housing, you will eliminate all glare due to our aerospace anti-glare technology that produces a field of view with zero distortions. This housing is machined with both 37.5 and 45 degree string angles. This kit includes: InSight Peep Housing, six (6) apertures (1/32″, 3/64″, 1/16″, 3/32″, 1/8″, 5/32″), aperture installation tool and a protective case.