This is a 2x Barlow lens made by Vixen. It extends the focal length of the lens, allowing observation at twice the magnification of your eyepieces. It is suitable for short focal length telescopes. Purchased new and used only twice, it is in excellent condition. However, please understand that it has been stored at home. (No pets.) - Brand: Vixen - Model: 2X Barlow Lens 31.7mm - Type: Barlow Lens - Size: 31.7mm - Accessories: Box included 【Manufacturer's HP】 Vixen 2X Barlow Lens 31.7mm https://www.vixen.co.jp/product/3907_00/ Retail price: 6600 yen Thank you for reading to the end. If you wish to purchase this item with other items from my listings, please comment before purchasing. #Vixen #Vixen #Telescope #BarlowLens