stainless stell EASY TO INSTALL This Single Hole Deck Mounted Arc Sink Faucet Can Easily Connected to Your Water Supply System or RV with an Adaptor; Diameter of Hole In Sink Should Be 18mm to 38mm HOT/COLD WATER SINGLE FAUCET: It Can Be Hooked to Either the Hot or Cold Water Line, But There Is Only One Handle, So It Would Not Work for Both hot and Cold At Once; High Arch Gathers Water Together and Concentrates No Splash, Environmentally Friendly, Controllable, No Waste THREADESize: 1/2 Inch US Standard Chrome Plated Threaded, You Can Connect It to Garden Hose, Dishwasher, Kitchen Sink, Dock Sink, Washtub Sink, Special for Outdoor Faucet, Like Boat, Camper Or Other Place EASY TO OPERATION: The Kitchen Faucet Is 10 Tall, Single Handle Design Integrate to Control Water Flow Volume Easily, High Arc 360 Degree Swivel Spout Supply Full Range Washing Access MATERIAL: Made of Eco-friendly Lead-free Stainless 100% Safe and Healthy, Brushed Nickel Finished Solid 304 Stainless Steel Construction, Hot/Cold Pressure Resistant, Anti-cracking, Anti-leakage and Anti-aging Q: What is the length of the threaded area A: It is 1.8 inches (4.5cm) Q: What size hole do I need to drill in the counter top A: 3/4 inch Q: What is the compatible size of the hole for the cold water dispenser A: The one hole installation faucet compatible with1/2 inch hole Q: Does the aerator come off and will we be able to attach a portable dishwasher adapter to this faucet A: Yes, you can attach a portable dishwasher adapter. Q: Is it can be used on boat or fish cleaning station A: You can use it on your boat, your camper, your garden, even your marine, some other outdoor area Q: When using with an ro system is the faucet so thick that water would tend to dribble out A: Yes, It can be fed by a a standard garden hose and provides ample water pressure of its intended purpose.