The HHA Optimizer Lite Ultra features an exclusive yardage dial that allows for rapid adjustment to the yard between 20 and 60 yards using the included sight scales, to determine with tape to use, sight in at 20 and 60 yards to determine which included sight tape works for your setup. In addition the Optimizer Lite Ultra sight features a tool free micro adjust windage, the sight is CNC machined aluminum, yellow sight ring, lens and light compatable. The HHA Optimizer Lite Ultra Model DS-XL5519 has a .019 pin with 6 Feet of fiber optic, a 2 diameter scope housing that features a rheostat which is able to adjust the brightness of the pin in seconds. Weighs 11 oz. Right Handed. Mfg Item Number: DS-XL5519-RH