CandleScience 50 Piece Natural Candle Wick, Medium Our wick is constructed from natural, flat, Cotton threads interwoven with Paper threads and contains no lead, zinc or other metals Use these wick with any of our candle tins, Jelly jars and mason jars All Candle Science candle wick comes coated with all natural wax and is 6 inches long Eco 10 series wick