Product Description: The world's thinnest brush - Estimated 1777 Ultra-thin triple tip toothbrush bristles 10,000 triple tip soft toothbrush bristles Specially developed to care for weakened gums and teeth Kent, which has been the 'world's best brush maker' since the 18th century, is one of the oldest established companies in the UK. Founded in 1777, Kent is a leader in the history of brush manufacturing and is a company recognized for its excellence in product quality, to the extent that it was granted a Royal Warrant for 9 years after George III.