This product is made of high quality material. Plastic body with optical glass lens, providing clear and sharp image. Easy to install and use, a good choice for you. Features: This diagonal can correct upside down and left-right reversed image easily, which allows you view things during daytime in correct position. Fits for 1.25inch telescope eyepiece and focuser. Work with Refractor and catadioptric telescopes. Wide 45 degree angle makes you view correct image from refractor telescope stand and just look down with a comfortable angle. Plastic body with optical glass lens, providing clear and sharp image. Comes with dust cover to keep your lens clear, easy to install and use. Specifications: Condition: 100% Brand New Item Type: Diagonal Mirror Body Material: Plastic View Angle: 45 degree Connector Size: Approx. 1.25inch / 31.7mm Weight: Approx. 85g / 0.2oz Package List: 1 * 45-Degree Diagonal Mirror 1 * Dust Cover Package List 1This diagonal can correct upside down and left-right reversed image easily, which allows you view things during daytime in correct position. 2Fits for 1.25inch telescope eyepiece and focuser. Work with Refractor and catadioptric telescopes. 3Wide 45 degree angle makes you view correct image from refractor telescope stand and just look down with a comfortable angle. 4Plastic body with optical glass lens, providing clear and sharp image. 5Comes with dust cover to keep your lens clear, easy to install and use.