ACE Wooden wicks are used in container candles for their wide flame and their crackling sound.
These ones are single ply with an added strip of timber that adds crackle and flame for a better burn.
Each wood wick includes a metal tab for stability in the container.
You may choose to add a cotton wick (without the tab) tucked in with the wood wick for even greater reliability - see photo.
NB: ACE 12mm wood wicks are only 130mm tall.