Purchased last month, brand new and unused! I am selling it because I no longer need it. I am also selling other filters. Brand: K&F CONCEPT Material: Optical glass Photo filter thread size: 49 mm Photo filter effect type: Polarizing Photo filter size: 49 mm [PL Filter] 49mm CPL polarizing filter, compatible with 49mm size lenses. Please check your lens size beforehand. *The exterior packaging may vary, but the contents are the same. [Polarization/Reflection Removal] Makes colors vivid and thoroughly suppresses reflections. You can also express the underwater scenery seen through the water surface, the scenery reflected on the water surface, and the transparency of wet leaves. It effectively removes reflections from the front and sides.