End the frayed thread ends! With a mere touch of a button, the tip of the thread burner heats up, which then melts the ragged ends of synthetic threading materials into a neat and smooth shape. Cannot be used for textile threads. CAUTION: When being used, the tip of the thread burner heats up to a high temperature, work out of reach of children and flammable materials and do not place on the skin. Allow the thread burner tips to cool before storing.