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SVBONY 1.25" Barlow Lens 2X Multi Coated T Adapter Double Lens 3 Element APO with HD Broadband Green Film Optics for Sta 1.25" 2x achromatic Barlow lens effectively double the capacity of an existing set eyepieces;the Barlow edges and innerBest Value eMagTech 
eMagTech 5X Barlow Lens 1.25 Inch Fully Metal Multi-Coated with M42 Thread and FMC Green Film Aluminum Alloy for Astrono 5X magnification : 5X barlow lens fits any 1.25"/31.7 mm eyepiece; use with eyepieces for 5X magnification while maintaiSVBONY 
SVBONY SV137 2X Barlow Lens 1.25 inch Metal Body Fully Multi-Coated Telescope Accessory Internal Brass Ring with Male T- Provides comfortable viewing;Using the 2x barlow lens with a longer focal length eyepiece lets you achieve the same highCelestron 
Celestron 93428 X-Cel LX 3X Barlow Lens for Telescopes, 1.25" Barrel, Triple The Magnification of Any Eyepiece, High Mag Product Type: TelescopeCelestron 
Celestron 93529 X-Cel LX 1.25-Inch 2X Barlow Lens (Black) Product Type: TelescopeSVBONY 
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