20mm Extension for 1.25 inch nosepieces

20mm extension for 1.25 inch nosepieces – threaded for filters.

Extends 1.25″ nosepieces and eyepieces to deal with excessive back focus or to obtain greater reduction with screw in focal reducers.
Made of anodised Aluminium, 1.25″ thread (M28.5) at both ends (M – F)