Features: Explore the wonders with this 4piece telescope eye piece lens set, featuring ranges of focal lengths for versatile viewing. Designed for beginners and experienced astronomers, this lens set is perfect for anyone looking to improve their telescope capabilities. Whether you're observing objects from your backyard or embarking on an adventurous camping trips, these lenses are fit for various outdoor settings. Improve your astronomical journey with this quality lens set, offering convenience, versatility, and protect with protective case. 4piece standard telescope eye piece lens set Internal thread for fitting filter 4mm, 6mm ,12.5mm and 20mm Comes with protective case; Specifications: Material:Alloy Includes: 4mm,6mm 12.5mm 20mm; Interfaces size: 0.96inches/24.5mm Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1set Telescope Eyepiece(4pcs)