The Axim Series has extra-long fibers fully protected by micro stainless steel tubes. New Tru-Touch soft-feel technical coating. Unique dual-end fiber design allows for increased pin brightness and compact size. Ultra-fine click adjustment added for windage and elevation. Designed so no tools are necessary. Includes adjustable level with two vertical bars. Reversible bracket added for greater vertical adjustability. Laser markings for windage, elevation and pin adjustments. Aperture has 1.8ö inner diameter, and accepts a 1.87ö scope lens. Glow-in-the-dark shooterÆs ring completes this sight.