Foldback Screw/U Shape In Electric Water Heater Element with 1 INCH NPT Thread 6KW 201 Stainless Steel Product Name: Water Heating Tube Thread Size: DN25/1"/32mm Thread Type: Square Tube Length: 345mm/395mm Tube Diameter: 8mm Voltage: 220V Power: 6KW Tube Material: 201 chrome steel Thread Material: Copper Accessories Material: 304 chrome steel Package: According to what you choosed