5X Barlow Lens 1.25" 31.7mm M42x0.75 Thread Fully Blackened Metal Optical Lens for Astronomical Telescopes Photography - Walmart.com
Amazon.com : Barlow Lens 5X, Multi-Coated 1.25" 5X Barlow Lens M42 Thread for Telescopes Eyepiece M42 x 0.75mm Thread T-Adaptor, Can be Attached to DSLR or SLR Camera via a Separate Ring
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Amazon.com : Bresser Barlow Telescope Lens 5X 31.7 mm / 1.25 Inch 3-Element Design and Multi-Coated : Electronics
Apertura 5x APO Barlow Lens for 1.25" Filters | High Point Scientific
EYSDON 5X Barlow Lens 1.25" Metal Fully Coated Focal Length Extender With M42 Camera T2 T Ring Adapter For Telescope Photography|Monocular/Binoculars| - AliExpress
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