Under $500

Description Extension tube with 2" plug diameter and an extension factor of 35mm. A ring clamp ensures an optimal attachment of 2" accessories. Th...

Explore Scientific Rack and Pinion Focuser Extension Tube 1" Extension for our 2" Rack and Pinion focusers on our ED APO telescopes. CA Residents: ...

Explore Scientific Rack and Pinion Focuser Extension Tube 2" Extension for our 2" Rack and Pinion focusers on our ED APO telescopes. CA Residents: ...

Temporarily Out of Stock, But More are On The Way! This Extension Tube is Available for Purchase on Back Order or Layaway     Explore Scientific Ra...