WITH CANDLE WICK centering device-allows to keep wick centered, will make your homemade candle decision-making process much easier - WARM TIPS-When making candles, please be careful of the dosage of dye and fragrance, could be overly large? e dosages affect burning effectiveness and lower candles ability to stay lit - SMOKELESS WICK- With excellent processing technology, no black smoke and no odor, ensure good burning stability when lit. VALUE PACK package contains ? lt 20 parts wax wick; Length: 100 mm. MATERIAL wick natural cotton threads with pre-coated paraffin wax, do not contain lead, zinc or other metals.