ONE High Quality 1.25" Neutral Density Filter for Telescopes 3 Choices BNB, Sale
You have a choice from three products: Filter ND96-0.3 ND 96-0.6 or ND96-0.9. The filter has a standard 1.25" male filter thread (M28.5x0.6) so it can be screwed on to virtually any astronomy eyepiece or accessory that has 1.25" filter threads.