With Light Baffle Technology in the 14 grain housing, you will eliminate all glare due to the 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 apertures (1/32″, 3/64″, 1/16″, 3/32″, 1/8″, 5/32″), an aperture installation tool, and a protective case.