Neewer 2 inches Variable Polarizing Filters Optical Glass for Telescopes and Eyepieces to Dim the View, Increase Contrast, Reduce Glare and Increase Detail (2 Pieces) Type: Polarizer
References
^ Neewer 2 Inches Variable Polarizing Filters Optical Glass For Telescopes And Eyepieces To Dim The View, Increase Contrast, Reduce Glare And Increase Detail (2 P, Neewer. NeweggBusiness. UPC 191073003170 (revised May 2018)
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