Compact and lightweight, Hammers 2x power pistol scope 2x20BK is perfect for pistol target shooting and hunting revolvers. Features: Fine line wire crosshair for pinpoint accuracy Premium quality multi-coated optics give a clear and sharp view Fixed 2x power Quick focus ring at the end of the eyepiece Finger-adjustable windage and elevation screws of 1/4moa click Standard 1-inch main tube Long eye relief: 12 1/2 inches Field of view: 15.72 feet at 100 yards. Overall Length: 8 1/2 Windage and elevation click value: at 100yds Anodized satin black finish Package contents: The set includes 2x20SV scope, bungee corded see-thru lens caps, and a pair of scope rings that fit onto a Weaver scope base and rail. Ring has a 21.80mm center height.