To enlarge a work space in a sink by providing an implement for allowing waterdrops falling from dripping of wet objects, to automatically flow into the sink of a kitchen.

In this new sink, a horizontal part beside a faucet is formed into an inclined face, and when the wet objects are placed on a drain plate above, falling waterdrops flow on the inclined face and fall into the sink. For an existing sink, an incliner at the bottom of an inclined plate for allowing the falling waterdrops to flow in one direction, is fitted to a drainer dimensioned to fit the horizontal part beside the faucet, to form a set for use. A water outlet of the incliner is adjusted to the sink to allow the waterdrops to fall into the sink. With the use of this means, a scrubbing brush and a triangular corner in the sink are placed on a top plate to enlarge a space in the sink.