Amazon.com : Astromania 1.25" 3X Short Focus Barlow Lens for Telescope Eyepiece - Superior Sharpness and Color Correction : Electronics
Orion 3X, Tri-Mag 1.25" Barlow lens
1.25 Inch 3x Barlow Lens For Newtonian Telescopes Eyepiece - Hunting Spotting Scopes - AliExpress
Barlow lens | What they are and how to use one | BBC Sky at Night Magazine
Amazon.com : 1.25" Format 3X Barlow Lens : Electronics
Celestron 3x Barlow Lens 1.25inch Plastic _ - AliExpress Mobile
965" 3x Shorty Telescope Barlow Lens
Amazon.com : 3X Barlow Lens, 3X Astronomical Telescope Eyepieces Barlow Lens with M42x0.75mm Thread, T Ring Adapter for 24.5mm Astronomical Telescope/Digital Camera : Electronics
GSO 1.25" 3x ED Barlow Lens
What Is A Barlow Lens and How To Use One
Levenhuk ED-3x Barlow Lens – Buy from the Levenhuk official website in USA