This wick is suitable for use in oil burner and oil burner lamps, it is loosely braided and has a hollow centre. The correct wick for your oil burner or lamp can be found by laying the wick flat and measuring its diameter (width) or if you are unsure you can send us a small piece of wick and we will match it up for you. This round wick can also be used for any other capillery application such as watering plants when you go on holiday; the RW174 is the best for this.