GameChanger Bone Collector sight features: TRU-ZERO pin design, minimizes pin gaps. Fiber color-change without changing pins. Quick and easy fiber replacement. Extra-long fibers routed through bracket for increased durability and exposure to UV light. TRU-TOUCH soft-feel technical coating. Ultra-fine click adjustment for windage and elevation. Stainless steel hardware. Tool-less design. Adjustable 2nd & 3rd axis level with two vertical bars. Level illuminated with luminescent tape. Reversible bracket for greater vertical adjustability. Markings for windage, elevation and pin adjustments. Large circular field of view. CNC-machined lightweight design. Aperture has 2.0" inner diameter. Glow-in-the-dark shooter's ring. Adjustable for left and right-handed users. Adjustable micro-push button light included. Color: Carbon Style: 5 Pin - .019"