Material: Candle wicks are pre-coated with paraffin wax, made of natural cotton thread, free of lead, zinc and other metals. Smokeless and odorless: well made, no black smoke, no smell, burns stably under the light EASY TO CUT: The wicks can be easily cut to the desired size;easy to smooth, will not break, suitable for candle making and DIY candle projects Application: simply stick the wick on the bottom of the container and then put the lid in the middle when the wax is poured (use our matching tool wick centering tool) Features and performance: well made, no black smoke or bad smell, burns evenly in thestrand Detailed data: natural white cotton, length 20cm;attached with wick base 0.79 inch (2 cm);Wick centering device length 9. 5 cm Note: 1. Due to the difference of different monitors, the picture may not reflect the actual color of the item.2. Due to manual measurement, there may be 1-2mm error.