This is a lens hood for the SIGMA 18-50mm F2.8 DC DN | Contemporary lens. I am selling it because I have decided to sell the lens. It's the short.ver. When the hood is attached and the cap is on, they align flush. There are no noticeable scratches or stains, and it has been used relatively little. I purchased it from an individual seller on BOOTH. It was 3D printed, and the seams are visible, which is part of the design. The original product page is below: https://booth.pm/ko/items/6985227?srsltid=AfmBOopw9c-4Dnxa5Gep5ptuB0Nz9FautR2b7YjdFULJLJcJ4Sw1dcVU