High Quality: Burn clean and non-, no lead and zinc so there's no bad smell during burning. With superb processing technology, no black smoking and burning stability when lit. Perfect For Different Containers: Can be used with a wide of candle wax containers, such as jelly jars, teacups, pillar, dipped, tapers, floating, rolled, soda/soup cans, sea shells, bowls, coffee mugs, plant pots, etc. Wide Application: Perfect for homemade DIY projects, candle making, color tealights, use with scented candles. DIY your own tea lights with these candle tins, perfect to make candle for wedding, , candlelight dinner on Valentine's Day.