LAIDA New 1.25" Parfocal Ring Precision Machined Aluminum Black Anodizing Set of Three for Photography Focusing LD2030A|Monocular/Binoculars| - AliExpress
Parfocalizing Ring Set - (3) 1.25" & (2) 2" Rings w/ Wrenches - TelescopeAdapters
LAIDA New 1.25" Parfocal Ring Precision Machined Aluminum Black Anodizing Set of Three for Photography Focusing LD2030A|Monocular/Binoculars| - AliExpress
Amazon.com : Astromania 2" Parfocal Telescope Eyepiece Rings, Set of Two : Camera & Photo
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LAIDA New 1.25" Parfocal Ring Precision Machined Aluminum Black Anodizing Set of Three for Photography Focusing LD2030A|Monocular/Binoculars| - AliExpress
Eyepiece Ring for Telescope Eyepiece New 1.25" Parfocal Ring Set of Three Black - Newegg.com
Set of Two Alstar 2 Parfocal Telescope Eyepiece Rings mimbarschool.com.ng
Astro Essentials Parfocal Rings | First Light Optics
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365Astronomy 2" Parfocal Eyepiece Rings / Parfocalizing Rings - Set of Four
LAIDA New 1.25" Parfocal Ring Precision Machined Aluminum Black Anodizing Set of Three for Photography Focusing LD2030A|Monocular/Binoculars| - AliExpress
RVO Parfocal Rings - Rother Valley Optics Ltd
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DAR Astro Machining - 2 inch & 1.25 inch Parfocal Rings