TRU-ZERO pin design minimizes pin gaps. Extended bracket. Tool-less design. Lightweight / compact design (weighs 5.8 oz). TRU-FLO fiber design. Extra long fibers routed through bracket for increased durability and exposure to UV light. TRU-TOUCH soft-feel technical coating. Innovative pin design allows for quick and easy fiber replacement. Micro push-button light included. Special light location allows for more effective light distribution to fibers. Reversible bracket for greater vertical adjustability. CNC machined. Aperture has 1.8" inner diameter. Glow-in-the-shooters ring. Adjustable for left and right handed users. .019.