SEW-RETRO GreaseTMhas been specially formulated with the proper melting point and lubricating qualities for vintage & antique sewing machines, including the Singer Featherweight 221 & 222K… some attachments need grease sometimes, too!SEW-RETRO GreaseTMis appropriate for any and all sewing machines with all-metal gears. (Donotuse this lube with any plastic or nylon gears.) SEW-RETRO GreaseTMis appropriate for other vintage Singer Sewing Machine motors – so long as the vintage Singer motor has motor ports with a felt wick inside.