Feature: 1. Strong Versatility: Strong versatility, 1.25 inch standard interface, suitable for all 1.25 inch astronomical telescopes and accessories, built in M28.5x0.6mm thread specification. 2. 38MM Focal Length: Using 2 groups of 4 optical structures, with 38MM focal length and 52 degree large field of view, comfortable viewing, easy to find the target. 3. Optical Glass Lens: The lens adopts high quality optical glass, FMC coating process, small chromatic aberration, high light transmittance, low dispersion, clear image. 4. Lens Barrel: The lens barrel is made of aluminum alloy, which is sturdy and durable, with internal matting treatment to reduce reflection. 5. Foldable Eyecups: The eyepiece of the astronomical telescope is designed with a folding eyecup, which is not easy to be fatigued when watching for a long time. Specification: Item Type: Astronomical Telescope Eyepiece Material: Aluminum Alloy, Optical Glass Interface Specification: 1.25in Focal Length: 38MM Field of View: 52 Degrees Exit Pupil Distance: 17MM Lens Coating: FMC Optical Structure: 4 Elements in 2 Groups Thread Specification: M28.5x0.6mm. Package List: 1 x Astronomical Telescope Eyepiece2 x Dust Cover