The K525i combines maximum optical performance and precision with unique handling and ergonomics. A rugged riflescope for professionals, with windage optional left or right, precise illuminated reticles in 1 st focal plane and the unique TWIST GUARD windage. Maximum optical performance – field of view, high contrast image, high definition Absolutely reliable repeat accuracy and precise, clearly defined click mechanism Optional left or right side windage Parallax wheel integrated into the elevation turret (patented) (20 m to ∞) Innovative TWIST GUARD windage (patented) Precise illuminated reticle in 1 st focal plane 1st Focal Plane When viewing the reticle in the first image plane, the reticle size also changes when the magnification is changed. The bar spacing and the coverage range remain the same. Main Tube 34 mm The main tube has a diameter of 34 mm which is the standard for tactical scopes.