Most of these pendants use a Standard Edison medium screw base (E26) for the single socket.
Most require hardwired installation and provide an adjustable hanging height. Many listings note adult assembly is required; some also mention required tools or that the cord may need to be trimmed to set a custom length.
Most jute-style pendant listings show a single light bulb socket (Number of Light Bulb Sockets: 1).
Product descriptions commonly recommend hanging them above dining tables and kitchen islands, and using them in entryways or living rooms. Kitchens, dining rooms and entryways are specifically mentioned in several listings.