Product Features: 2" Diagonal mirror with 98% reflection, optics are made with Pyrex glass. Multi-layer dielectric coatings that produce 98 percent reflectivity for brighter, sharper images. Comes with dielectric coatings for the most light transmission possible. Suitable for refractors, Schmidt-Cassegrains, ACF, EdgeHD and Maksutov-Cassegrains. 2 "-1.25" reducing sleeve with brass compression ring, non-disposing compression safety secures the eyepieces.

Product Details: Item: 2 inch 90 degree diagonal mirror Interface: Standard 2 inch Body Material: Metal Prism Material: Optical glass Thread: Internal extinction thread for 2 inch filters Use: Astronomical Telescope 1.25 inch and 2 inch eyepieces

Note: Do not use this product to directly observe the strong light source such as the sun, otherwise it will cause permanent damage to your eyes!

Product Packing: 1pc 2 inch 90 degree diagonal mirror 1pc 2 inch to 1.25 inch adapter