Specialty Archery Iron I Rifle Peep Aperture 1/16in 1502630. Featuring a .063" aperture size it is a part of the industry-leading Iron I system which delivers maximum precision and durability. Built with Optical Centered Technology (OCT) Protected Lens Technology (PLT) and Tool-less Aperture Technology (TAP) this aperture provides improved accuracy easy handling and long-lasting reliability. Ideal for use with verifier lenses and compatible threaded peep sights it?s an excellent upgrade for shooters seeking superior performance. Specifications for Specialty Archery Specialty Iron I Rifle Peep Aperture 1502630: Manufacturer: Specialty Archery Color: Black Features of Specialty Archery Specialty Iron I Rifle Peep Aperture: Aperture size: 1/16" (.063") Requires Iron I Peep Housing (sold separately) Optical Centered Technology (OCT) for pinpoint lens alignment Protected Lens Technology (PLT) prevents lens cracking Tool-less Aperture Technology (TAP) allows for easy adjustments Designed for quick removal and cleaning Compatible with Iron I verifier lenses Aperture weight: 8.2 grains Fits Williams Lyman and Skinner threaded peep sights (Iron I only) Package Contents: Specialty Archery Specialty Iron I Rifle Peep Aperture