Wall Mounted Basin Mixer with Progressive Cartridge Hot-Cold Mixing. -> PVD Finish: Graphite Grey (Finger-Print Resistant) Graphite Grey is a sophisticated and modern option which offers a great contrast to natural tiles and lighter hues. Many designers and passionate homeowners have shown great interest in playing with the juxtaposition of this finish. Our Graphite Grey Faucets are the first in the industry with ‘Progressive-Cartridge’ hot & cold water mixing. PVD (Physical Vapor Deposition) uses a state-of-the-art process that molecularly bonds the finish to the faucet creating the most durable finish available today. Products with PVD finish will not corrode, discolor, or tarnish. The PVD finish process on Graphite Grey is completed using a proprietary process which makes the surface finish highly finger-print resistant, making these faucets easy to maintain. -> Solid Brass construction for durability and reliability. -> Hot & Cold Operation using Progressive Cartridge Technology: Progressive cartridge technology, allowing accurate temperature control in one simple rotation of the handle-knob. This efficient energy-saving technology ensures hot water wastage is reduced and the beautifully refined design allows for easier elegant operation.