1. 3X Magnification Lens 1.25inch Eyepiece Lens with T2 Photography Thread for Landscape Viewing Astronomical Observation 2. 25in Interface] 3X eyepiece lens can be used with astronomical telescope with 3. 25in for large field lunar observation, medium sized star cluster, and a wide range of cloudy nebulae and deep space target. 4. [FMC Green Film] Fully coated green coated optical glass eyepieces with excellent image contrast and light transmission for maximum detail and clarity across the entire field of view. Planetary filter enhances details. 5. [3X and Anti Slip] Magnification lens has 3X magnification, making it ideal for enthusiasts with fast, short focal length telescopes. Anti slip and anti jamming design with inward slope to help avoid accidental falls.