Amazon.com : SVBONY Telescope Barlow Lenses, 1.25 Inch Telescope Accessory, Fully Metal Multi Coated Broadband Green Film Barlow Lens 5X for Telescope Astronomy Eyepiece : Electronics
5X Barlow Lens 1.25" 31.7mm M42x0.75 Thread Fully Blackened Metal Optical Lens for Astronomical Telescopes Photography - Walmart.com
Amazon.com : SVBONY Telescope Barlow Lenses, 1.25 Inch Telescope Accessory, Fully Metal Multi Coated Broadband Green Film Barlow Lens 5X for Telescope Astronomy Eyepiece : Electronics