25mm barrel extension for 1.25 inch nosepieces, threaded for filters.
Extends nosepieces and eyepieces to deal with excessive back focus or to obtain greater reduction with 1.25″ screw in focal reducers.
Made of anodised Aluminium
1.25″ filter thread (M28.5) at both ends (Male – Female)
Overall length is 25mm not counting Male thread
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