Mgaxyff Barlow Lens 31.7, Metal Barlow Lens ,Multi-coated 1.25 5X Barlow Lens M42 Thread for 31.7mm Telescopes Eyepiece - Walmart.com
125 inches 5X Barlow Lens Fully Blackened Metal Multi Coated Broadband Green Film with M42 Thread for Standard Telescope Eyepiece Astronomy - Newegg.com
Barlow Lens 5X 1.25 Metal Fully Multi Coated Optics Three Element APO 5 Times M 631976670968 | eBay