Duravit Circle 1x Single-Lever Basin Mixer AirPlus: Full and pleasantly soft water jet through air mixing in the aerator. One handle. Easy installation: The faucet is connected to existing water connections via flexible connection hoses. Suitable for single-hole faucets. Compatible with tankless water heaters. Connection hose size: 3/8 inch. MinusFlow: Reduced flow rate without loss of comfort, for particularly economical water consumption. Sustainable and hygienic: Smooth and durable ceramic cartridge. Without pop-up waste set. Please order waste valve separately. Easy-care and durable chrome surface. Surface-mounted installation. MinusFlow represents a reduced flow rate without loss of comfort. For showers 9.0 l/min and for basin mixers 3.5 l/min.