Camco 50ft TastePURE Heated Drinking Water Hose - Lead and BPA Free, Reinforced for Maximum Kink Resistance, 1/2" Inner Diameter (22903) Ideal for water line freeze protection; self-regulating heat source keeps water flowing without overheating and without the need for a thermostat or temperature controller Made with NSF-61 certified hose and is drinking water safe Matching female hose fittings allowing hose to be used with power from RV or Campground power source Heavy-duty heat shrink provides strain relief on both ends of hose Operates on 120VAC / 4.5 AMPs