Overflow
Overflow has the form of an opening located at the top of the bowl; this opening must be connected to the drain by a hose. Such a device avoids the transfusion of water over the edge of the sink: when the bowl overflows, water will flow into the sewer through the overflow and will not rise above the edges.
Tap hole
Availability of space in the sink for the installation of the mixer. This hole can be cut in advance or, if necessary, knocked out during installation (the corresponding place on the model already exists and is made of a softer material).
Surface type
Type of washing surface made of stainless steel (cf. «Body material»).
— Glossy. Brilliant, mirror surface, distinguished by attractive appearance. On the other hand, on such a surface quickly appear contamination and mechanical damage (traces from dried water, fingerprints, scratches, etc.), so to preserve the appearance it needs to be cleaned regularly, or even polished.
— Matte. The matte surface does not look as bright as glossy - it is fainter, without pronounced reflections. On the other hand, such surfaces are less susceptible to contamination and damage: fingerprints, traces of dried water, scratches and scuffs on such surfaces are not as visible as on gloss.
— Textured. Surface having a relief pattern with a depth of a fraction of a millimeter. This material is most convenient and practical from the point of view of maintenance, it perfectly masks contamination and is well resistant to scratches. The main drawback of textured surfaces is higher cost than matt and glossy. In addition, contamination and bacteria can accumulate in grooves, so clean such sinks should be with special care.