COTTON OIL LAMP WICK is designed for use in candle systems that contain a liquid oil base as a fuel source. This wick is long-lasting and optimally absorbs lamp oils, palm oils and vegetable oils. Some wicks in this series contain fiberglass cores; however, many are manufactured from 100% natural fibers. long-lasting   Raw Wick | Waxed & Tabbed Wicks | Wick Slection Guide | Sample Set