Most listings specify cast iron; at least one listing lists the material more generically as metal.
Listings show widths ranging from about 2.15 inches up to 6.5 inches.
Common finishes include black and dark brown; some listings note an antique finish or 'no surface treatment.'
Several listings state that mounting hardware is included—often screws, wall anchors, and installation instructions.
Options include single-piece listings and multi-piece sets. Listings commonly show two-hook sets, and at least one listing offers a set with four double hooks.