For eyepieces that need to be extended out a bit to reach focus, a
common problem with Newtonians. This 1" extension screws into the
eyepiece barrel filter threads and extend the barrel. The extensions
are also threaded for filters. Machined from aluminum, anodized black.
Male 1.25" filter threads on one end, female 1.25" filter threads on the other.

Price includes USPS shipping in the USA!