5 foot section of 1/8" round cotton wrapped fiberglass wick for oil candle and oil lamps. This wick measures 3.8mm for a more exact measurement. This wick fits many of our glass wick holders. It is a great wick and more absorbent with the cotton exterior wrap over the fiberglass (which does not burn away). Read the description of each glass wick holder to select the correct wick to fit. Sold in a 5 foot section but if you order a larger quantity of wick, it will be cut in one continuous piece.