Konus 2x Barlow Lens 31.8mm with Photo Adapter for Konus Telescopes is a part of the high quality and dependable Telescope Accessories from Konus. All of the features you need for a price you want. Telescope Accessories from Konus are well known for their quality and Konus 2x Barlow Lens 31.8mm with Photo Adapter for Konus Telescopes upholds that standard.