Brand: Celestron Focal length: 8-24mm/7-21mm Dimensions: 1.25 / 31.7mm, astronomical telescope for all 1.25 ports Coating: Optical lens, FMC full green film, high definition. Overview Multi-purpose eyepiece, 1.25-inch eyepiece telescope for all astronomical telescopes (31.7mm interface) for viewing landscapes and astronomical observations of lunar surfaces, planets, nebulae, clusters, diffuse nebulae, etc., high brightness, large view Field, observation is very comfortable; metal body, full-surface multi-layer coating, high-quality optical performance. A variable eyepiece is equivalent to multiple eyepieces, magnified to any focal length between 8 mm and 24 mm from high to low, short to telephoto, easy to adjust multiples, very practical eyepieces. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store