NovaCare's universal brush heads, produced in Germany, have unique quality and performance. The 1600 durable and double-layered bristles of the brushes with micro silver ensure perfect cleaning of the teeth and are up to three times cleaner than regular brush heads. In addition to the unique performance of the brush heads, the antibacterial brush heads have a lifespan of approximately six months. The brush heads are delivered in a luxurious travel packaging and are available in several colors: light blue, dark blue, pink, yellow. The universal brush heads fit almost all common rotating (revolving) models. The brush heads are not suitable for sonic models.