This trimmer is perfect for trimming your wicks in between burns. During the burn of a candle, carbon builds up on the wick. If you continue to light the wicks without trimming, the flames will get bigger, produce more soot and burn faster. This is why it is important to trim your candle wicks to 1/8"- 1/4" before each burn. You will see a lasting difference in your candles! Approx. 7" long.