GOWENIC Zoom Eyepiece for Telescope,7-21mm Continuous Zoom Full Multilayer Coating Eyepiece for Low Power and High Power Viewing - for 1.25 Astronomical Telescope

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GOWENIC Zoom Eyepiece for Telescope,7-21mm Continuous Zoom Full Multilayer Coating Eyepiece for Low Power and High Power Viewing - for 1.25 Astronomical Telescope