1.25 inch Extension Tube for Astronomy Telescope Monocular Eyepiece with Brass Compression Ring - Walmart.com
Amazon.com: Astronomical Telescope 1.25 Inch Extension Tube, Premium Material Fixed Photography Extension Tube 1.25in Diameter for E for Camera for Photography : Electronics
1.25 inch Extension Tube for Astronomy Telescope Monocular Eyepiece with Brass Compression Ring - Walmart.com
194mm telescope equatorial mount extension bridge pier For AM3/AM5/Gem45/cem40 | eBay