Bresser 35mm Telescope Extension Tube for 2″ Eyepieces – Compatible with Astronomy Accessories

Extension Tube With 2″ Plug Diameter And An Extension Factor Of 35Mm. A Ring Clamp Ensures An Optimal Attachement Of 2″ Accessories.
The Blackened And Ridged Inside Effectively Prevents Reflections. Also A 2″ Filter Thread Is Inside.