Easy to use: Just fill the bottle with enough lamp oil to submerge the wick, then put the ceramic candle into the opening and light it. Strong practicability: Used together with liquid lamp oil, it can turn empty wine or champagne bottles into romantic candle lights. Environmental protection and durability: Please also save the old cork, you can put it on the bottle cap when not in use to save fuel evaporation. Purpose: The wick allows the candle to breathe and extract the required oil to continuously burn to produce a beautiful flame, with good quality Easy to replace: 7 included, easy to replace and affordable