Belfast sinks otherwise known as farmhouse sinks, have a traditional style that overhang the front of the kitchen. They are commonly ceramic but some modern versions can come in varaitions of stainless steel.
The standard widths of a belfast sink are 600mm or 800mm in width, but can be available in smaller compact sizes too.
Hidden Brackets can be used for a seemless contemporary look. The brackets are fixed to the wall and slot through the width of the shelf. These shelves tend to look a little thicker in order for the brackets to hide inside.