NON-AERATED, RIBBON FLOW: This sink faucet features a rectangular spout opening that releases a clear, non-splashing, natural stream. Flow Rate: 2.2 GPM (8.3 L/min) at 60 PSI. CUPC NSF CERTIFIED: This faucet meets U.S. and Canada high quality standard (Uniform Plumbing Code), certified by IAMPO. Premium brass material ensures longevity and reliability. Brass is high-pressure resistant and won't easily corrode like zinc-alloy. Less than 0.25% weighted average lead content. One-piece BRASS faucet body, has no plastics covered by zinc-alloy shell. WATER SUPPLY HOSES: Nylon braided exterior, which protects against chemical corrosion (commonly caused by detergent) and rusting. And the inner tubing is made from PEX, safe for drinking water. Max. Length: 24-inch, with standard 9/16-24 UNEF connectors, you can easily connect our hoses with your stop valves. 1 HOLE INSTALLATION: Mounting Hole Diameter: 1.26-inch to 1.42-inch, Max. Counter Thickness: 1.38-inch, Max. Flow Rate: 2.2 GPM (8.3 L/min) at 60 PSI, Spout Reach: 4.22-inch, Spout Height: 3.94-inch. For 3-hole installation, you might need to purchase a hole cover. IMPORTANT: Before supply lines connection, please turn on hot and cold water supplies and flush water lines for one minute. This flushes away any debris that could cause damage to internal parts. And then you can connect supply lines and slowly turn on the water, check all the connections for leaks.