Product Description: The world's thinnest brush - Estimated 1777 Ultra-thin dual tip toothbrush The soft and rich dual bristles at the ends of 6,000 are specially developed to massage and care for weakened gums. Kent, which has been the 'world's best brush manufacturer' since the 18th century, is one of the oldest established companies in the UK. Founded in 1777, Kent is a leader in brush manufacturing history and is a company recognized for its excellence in product quality, to the point that it was granted a Royal Warrant for 9 years after George III.