Leapers UTG side wheel add-on for bubble leveler scope, 100mm. Features: - TG 100mm side wheel add-on for finer Parallax adjustment - compatible with AccuShot bubble leveler scope with SWAT (side wheel adjustable turret) adjustable objective - aids in finely tuning Parallax adjustments - Aircraft grade aluminum construction with a matte black anodize - distance marked with yardage increments