The Matte Black Milani Mixer is a single hand mixer using progressive cartridge technology. This is a water saving product which allows ease of operation for the user with precise temperature control with a twist of the dial. When using progressive cartridge technology you twist in one clockwise motion starting at low pressure cold up to high pressure cold, Once turned half way warm water is introduced at full pressure. The dial is then precisely adjustable for the perfect temperature right up to maximum temperature when fully turned. Get more information about such products by visiting https://www.abiinteriors.co.nz/shop/browse-by-colour/matte-black-tapware.