Each oil lantern comes with one wick installed, but why not get your extra 100% cotton wicks now, so you don’t get caught short when you need replacements. If you plan to use your oil lamps regularly, then a few sets per lantern is recommended.
One set of 3/8″ wicks is 4 x 6″ precut pieces, approximately 24″ total. Works with lamp oil or kerosene.