The Orion Sirius Plossl lot Telescope Eyepiece Multi-Coated Shorty 2X Barlow Lens is a high-quality accessory designed for telescopes with a 1.25 inch diameter. Specifically made for Plossl and Orion Sirius Plossl models, this Barlow lens offers a 2X magnification, perfect for enhancing your viewing experience. With the trusted Orion brand and multi-coated technology, you can expect excellent image quality and sharpness when using this eyepiece. Ideal for astronomy enthusiasts looking to enhance their telescope setup, this Barlow lens is a valuable addition to any telescope collection.