100×150 ハードグラデーションND4 HGND4の高価買取価格

It seems you've referenced a product code (4957638732048) along with a description that likely pertains to a neutral density filter (ND filter) for photography or videography. Specifically, the "100×150" dimensions suggest it is a rectangular filter, and "ハードグラデーション" translates to "hard graduation," indicating a type of ND filter with a sharp transition between the clear and dark sections.
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