Formerly known as CD wicks, the Stabilo wicks are coreless, non-directional, flat braided wicks with a special paper filament woven around them. This configuration is engineered to promote maximum and consistent capillary action while ensuring a wick trimming flame posture. The Stabilo series is used in many different applications and is especially compatible with the harder-to-melt viscous vegetable based waxes. Here is a link to a video that explains how to select the size wick you need. https://youtu.be/vYKiF54W0wY