SVBONY Telescope Filters Set 1.25" 4 Color Filter Set Green Red Yellow Blue for Viewing Bright Objects This filter allow you view bright objects which are so intensely bright it's very difficult to see it through a telescope without filter;You can really see the details Green red yellow blue four color filters fit for different bright objects;choose the filter which is the color the object you're viewing is not;such as moon,jupiter,Mars etc Fits all standard 1.25" telescopes eyepiece and t adapter;thread inside tube Lens material;optical glass lens;provide clear image;frame material;alloy;light and solid material ensure a long term use Lifetime warranty;we confidently promise lifetime warranty for each one from us