Designed specifically for Olympic style recurve bows. Constructed of aircraft aluminum and weighs less than the top selling carbon bar sight. A superior InchWindage Dovetail Guide System Inch replaces inferior twin-dowel guide systems. Features the InchVTS Inch (Variable Tension System) providing an adjustment where the archer personally chooses a desired elevation travel tension setting. Provides 4.375 Inch of elevation adjustment and a 9 Inch extension bar.