Slider sight allows to set each Accu-Click at a specific 20, 30, 40 yards so the slider stops where you want it. A 45 degree rear facing sight tape allows easy recognition of the sight pointer. Adjustable red elevation tension lever provides own personal choice of how easily the sight slides along the elevation bar. Features all axis leveling capabilities from the fire adjustments NO shims needed to the second and third axis leveling on the head of the scope adjustment. Superior windage dovetail guide system. Comes with AV-41 scope has a 1 3/4″ or 41MM inside diameter. Fire pin equipped tough CNC machined pins and a new method of fiber wrapping technology, creating one of the brightest fiber optic pins. The Picatinny in-line sight mounts your sight to the front of your bow for better balance and create a super strong and durable connection so functional is the ability to adjust the sight in or out to one of three positions to match the peep sight to the scope housing or up or down to one of three positions on the bow riser for enhanced elevation adjustments. Adjustments with each picatinny connection can be done with one screw and snugged down slightly with a hex key wrench.