For a pelvis without overflow; easy to install, with a standard installation dimension of 1 ¼ , this emptying drain is suitable for all commercial sinks Automatic and actuated finger blowing, the lid of the sink plug stands out by hand in just a few seconds unscrew, clean, screw and finished Brass construction which is then plated chrome, anti-erosion, anti-abrasion Waterproofing ring: very high density and continuous Be careful: the sink hole must be round regular, the edge must be smooth and flat. If the sink’s hole is biscornu and frosted, it will be flee after you have installed this drain