Wick tabs are used to create tabbed wicks using spooled (un-tabbed) wick. Our wick tabs are made of steel, and coated in tin so they are resistant to corrosion from candle fragrance oil. The longer neck (6mm) adds extra safety as it will?extinguish the flame before reaching the very bottom of the candle,?which helps prevent?the bottom of the candle container from getting too hot and potentially creating a fire hazard.