Easy to use. Simply fill the wine bottle with enough lamp oil to dip the wick, place the ceramic candle in the opening and the light Use together with liquid lamp oil to turn an empty wine or champagne bottle into a romantic candle lamp Store your old cork too, use it to cap the bottle when not in use to save fuel evaporation Wick allows the candle to breathe, pulling the oil needed to create a beautiful flame with a continuous burn Comes with 7 pieces, easy to change and economical