Product information product name: holographic sightproduct features: invisible aiming product model: jh400 wide product multiple: 1 times product diameter: 22mm product clamp: 20mm with light or not: red and green light product size: About 6cm differentiation image: four change points fixture selection: 11mm narrow. 20mm wide describe 20mm steel rail tactical holographic reflection red and Green Point collimator type 4 grid, with a 33mm reflecting lens aperture, the tubeless design provides a wide field of vision, which is suitable for normal and fast shooting of moving targets. Durable all metal structure, adjustable wing height (including tools), red and green two-color reticulation, 5-speed adjustable disc brightness, light weight, wear resistance and shock resistance, integrated installation of standard 20mm guide rail. Length: 3.15 "(80mm) Net weight: 110g (4oz) Total weight: 216g Magnification: 1x Target diameter: 24x33mm Mesh type: dot, cross, 10moa and 3moa Color: Black,tan,red Please refer to the picture for details. include: 1* four change point sight 1*cr2032 battery (not installed) 2* wrench 1* rubber dust cap 1* mirror wiping cloth