Description: Full metal 1.25 inch 45 degree angle mirror to ensure that the image is upright, but left and right reversed. The diagonal reflector is suitable for viewing celestial bodies and good for land observation use. Standard 1.25'' diameter;fit for 1.25'' focuser and eyepiece;work with refractor and catadioptric telescopes;not recommended for reflector telescope. Easily correct upside down and left right reversed image;this diagonal correct upside down and left right reversed image easily;allow you view things during daytime in correct position. Easy to use:Just insert into 1.25 ” telescope at the silver end;the other end fix 1.25 ” eyepiece by the screw. Specification: Body Material: Full Metal Adapter Telescope: Refractor Telescopes Adapter Eyepiece: 1.25inch Refraction Angle: 45-Degree Color:Black Package Includes: 1 Piece 1.25 inch 45 Degree Diagonal Mirror 2 Pieces Lens Cap Cover