Stainless steel construction 5 1/2″ spout reach 1/4 turn ceramic disc control cartridges 1/4″ compression connection not included Flow Rate: 0.5 GPM at 45 PSI 1 3/8″ diameter maximum hole cutout Not suitable for R.O. systems or as a hot water dispenser Key Features & Innovations Rohl – Filter Faucet Technology The Rohl Filtration Systems use a composition of Katadyn ceramic, anti-bacteria silver, carbon block and Zeolite. This one small unit has the capacity to reduce a variety of water contaminants including pathogenic bacteria, organics, chlorine, lead and mercury. Based in Switzerland and established in 1928, Katadyn is a world leader in the design and manufacturing of filtration products approved as safe and effective by some of the world??s leading authorities on water purification. The filter does not eliminate important minerals such as magnesium, calcium and fluoride.