The Etna built-in set by Imex is suitable for installation on a sink.

It features a mixer, which is the main part of the built-in system, as it controls the temperature and pressure of the water. 

It also includes a spout, from which the water flows out.

The faucet is a mixer, meaning it has a single mixing mechanism to easily achieve the desired water temperature, making it easy and practical to use.

The built-in mechanism is included, making the faucet fully functional.