UTG Add-on Index Wheel for Side Wheel AO Scope 100mm

UTG 100mm Diameter Side Wheel Add-on for Making Finer Parallax Adjustments Compatible with Side AO ACCUSHOT Optics and Not Compatible with Bubble Leveler Side AO ACCUSHOT&reg or Side AO BUGBUSTER&reg Optics Aids in Finely Tuning Parallax Adjustments Aircraft Aluminum Construction with a Matte Black Anodize Laser Engraved Distance Markers in Yardage Increments