Added descriptions from overseas websites. This is a set of the NiSi Proseries square filter holder and two square filters. I received it from someone, but I'm selling it because I don't have a chance to use it. 【Contents】 ・NiSi Proseries Square Filter Holder ・2 Square Filters ※Everything in the photos is included. ※Details such as names, model numbers, and densities are unknown. 【Supplement (Reference)】 ・It seems to be a filter system for smartphones/small cameras. ・I was told they are PL and GND filters, but I cannot guarantee it. ・Please judge the compatible models and specifications if you know them. 【Condition】 ・There are scratches and small marks from use. ・There are no cracks or major chips. ・Please check the condition in the photos. 【Caution】 ・Since the details are unknown, please purchase only if you can judge from the photos or have knowledge of the product. ・Please refrain from purchasing if you are sensitive to details.