Sigma Art 24-35mm f2 DG for Canon EF  type_Camera Bags but I assume that it's

but I assume that it's some kind of SEO thing

8 lens for the Canon FD manual focus lens mount

Zuiko Digital 1

The Nikon D3100 is a compact DSLR camera that shoots 1080p/24 video or 14mp stills

so this might not be the right lens for you if you’re precious about cosmetic condition

Sigma Art 24-35mm f2 DG for Canon EF &nbsptype_Camera Bags but I assume that it'sThe Sigma Art 24 35mm f2 DG lens is a fast, full frame wide angle zoom lens for Canon EF cameras. In very good cosmetic condition, with light wear from normal use and handling; most notably, the "24" legend on the zoom ring has worn partly off. Optics are clean, with minor dust. Function is excellent. Includes hood, case, and original box.