Specification Binding : Office Product Brand : American Photonics Color : W/nozzle, BOSS LS ADPT Label : American Photonics Manufacturer : American Photonics MaterialType : ZeSe, Anodized Aluminum Model : LS-2065 PartNumber : Co2 Laser Lens ProductGroup : Art and Craft Supply ProductTypeName : ART_SUPPLIES Publisher : American Photonics Size : Kit 50.8" lens SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/31sZkxoF4QL._SL75_.jpg SmallImage_Width : 75 Studio : American Photonics Title : American Photonics 20mm Diameter Lens Tubes with ZnSe Focus Lens. Kit 50.8" Lens W/Nozzle, BOSS LS ADPT