ITEM NAME:1.25in Metal Telescope Eyepiece Plossl 8mm + 5X Barlow Lens + Astronomy Filters Description: A medium power eyepiece + 1.25" telescope eyepiece blue and green filter + barlow lens 5X telescope eyepiece 1.25" interface M42x0.75mm thread. 1.25- inch 8mm plossl eyepiece set , gives the widest viewing field along with extra sharpness and long eye relief. Threaded for standard 1.25- inch astronomy filters and barlow lens. 8mm Plossl Eyepiece: 4-element plossl design, has a approx 52- degree AFOV.Perfect for broad-field lunar observations, medium-sized star clusters, and a wide range of cloudy nebulas and deep-sky targets. 5X High Power Magnificationï ¼Å¡more detailed at the star, moon and other celestial bodies.1.25 Inch Interfaceï ¼Å¡universal for Celestron, Nikon, Orion and other telescopes. 1.25" Telescope Eyepiece Color Filter:Perfect for enhanced views of the moon and brighter planets.Screws on standard 1.25" astronomy telescope eyepiece. Specification: Eyepiece Info: Focal Length: 8mm Threaded for Filters and Barlow Lens : 1.25 inch (31.7mm) The Structure of the Optical System: Plossl Eyepiece Coating: Multi-coated Height (Total): 50mm Barlow Lens Info: Materialï ¼Å¡Optical Glass+Metal Magnification Factorï ¼Å¡5X Lens Coatingï ¼Å¡Multilayer HD Broadband Purple Film Threadï ¼Å¡M42x0.75mm Lengthï ¼Å¡6.7 cm/0.26 inch Diameterï ¼Å¡3.15 cm/0.12 inch Filters Info: Materialï ¼Å¡Metal Sizeï ¼Å¡30mm/1.18 inch Colorï ¼Å¡Green/Blue Package Includes: 1 Piece 8mm Plossl Eyepiece 1 Piece 5X Barlow Lens 2 Pieces Telescope Color Filter KTT0004695719418668.The Structure of the Optical System: Plossl Eyepiece. 1 Piece 8mm Plossl Eyepiece. Barlow Lens Info 1 Piece 5X Barlow Lens. Eyepiece Info Magnification Factorï ¼Å¡5X. Focal Length: 8mm. Filters Info.