[CRYSTAL CLEAR VIEWING] Fully coated lenses with a dust cover provide a and clear image for celestial and terrestrial observation. [EASY INSTALLATION] Simple to set up and use - just insert into the telescope and fix the eyepiece. [VERSATILE APPLICATION] Suitable for 1.25 inch eyepieces and 0.965 inch telescope focusers. [90 DEGREE ANGLE] Ensures that images are held upright without interfering with astronomical observations. [LIGHTWEIGHT DESIGN] Weighing only 3.8oz, this mirror is easy to handle and transport.