【Universal Size】The set includes siphon sink black and drain valve without overflow. They fit all standard washbasins due to the standard 1 ¼ inch installation size.【Odour-inhibiting design】The siphon with drain fitting can prevent unpleasant odours and insects from the sewage network. The water drains quickly and without clogging and makes water use more comfortable and convenient.【Double seal】As the siphon sink has wall hole sealing parts, there is no need to worry about water leaking.【Reliable and durable】The syphon and drain valve is made of solid brass. Perfectly fitting silicone seals keep the set permanently tight and leave limescale and corrosion no chance【Easy to install】 The siphon and pop-up drain contains all the parts required for the installation or replacement of the bathroom sink. Easy to install thanks to plug-in connections/tightening of the connections is sufficient.