Excellent choice for air rifles. Features variable magnification from 3 to 9 times and an objective lens diameter of 40mm, offering a clear image and a wide field of view. Specifications: Magnification: 3-9x Target illumination: Yes Reticle type: MilDot MOA Adjustment turret type: covered Adjustment graduation: 0.25 MOA Objective lens diameter: 40mm Overall length: 325mm Tube diameter: 25.4 mm (1 inch) Weight: 530g Includes 11mm mounts for mounting on your weapon.