Stainless Steel- Thread Cartridge Heater, Heating Element. Specifications: Type: Electric Water Heater Parts Model Number: DN15 Product Name: DN15 Threaded Cartridge Heaters Thread Size: DN15 (21mm) Voltage: AC110V/220V/380V Material: 201 Stainless Steel Wire Length: 30cm (11.8") Application 1: Threaded Cartridge Heaters for Water Tank Application 2: Threaded Cartridge Heaters for Mould Application 3: Threaded Cartridge Heaters for Water Heater Accept Custom-made: Yes Power: 500W/800W/1000W LJXH DN15/21mm Thread Cartridge Heater Heating Element 12x150/200mm Tube Size AC110V/220V/380V 201 Stainless Steel Product Name: Thread Cartridge Heaters Thread Size: DN15(1/2 "=21 Mm) Tube Material: 201 Stainless Steel Heater Tube Diameter: 12mm Heater Tube Length: 150mm/200mm  Voltage: AC 110V/220V/380V Wattage: 500W/800W/1000W  Wire Length: 30cm (11.8") Package: 1PC X Thread Cartridge Heater . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.