1/3" 2.8-12mm Auto Iris Varifocal CS Mount Lens for Camera

This is a 2.8-12mm. 4 varifocal zoom auto IRIS lens. 1 Piece 2.8-12mm CCTV Auto Iris Lens. Mount Type:CS Mount. Zoom: Manual. Optical Glass Lens. Auto-Iris Lens. It's just take you 1 minute. We'd like to settle any problem in a friendly manner.