These attractive, classically designed bases are shaped, polished and blued. Blades are supplied flat to allow for customization with a V or U notch. Includes 1 standing and up to 3 folding sight leafs, each incrementally taller than the last. A clamp screw locks the folding leafs in the upright position for use. Available in a variety of barrel diameters to fit any gun. Width of base .550", Standing leaf height .670", 1-Leaf .650", 2-Leaf ..670", 3-Leaf .709" Notes:Small: .600" to .675" Diameter BarrelsMedium: .675" to .730" Diameter BarrelsLarge: .730" to .830" Diameter BarrelsXL: .830" to .930" Diameter Barrels FeaturesUtilizes clamp screw to lock leafs into placeSight has witness lines on both ends and the base has graduationsTop of blades are left flat for regulation