【Material】: This RV water heater element is made from steel, which is sturdy and durable for long-term use. 【Part Number】: 520900. 【Easy to Use】: The replacement water heater part is easy to install and does not require additional professional tools. 【Purpose】: The RV electric water heater component is designed for the safe and efficient disassembly and installation of specific parts within an RV water heater system. 【Features】: The resistance heating tube in the replacement RV water heater part contains a built-in resistance wire that generates heat through electrical resistance, enabling efficient and rapid heating of the surrounding water. Specification: Socket end measures 27mm (1-1/16"), and the other end measures 38mm (1-1/2"). Total length is 15cm (5.91"). Central hole diameter is 8.5mm (0.33"), allowing use with a screwdriver or rod with a diameter under 8mm (0.31") for leverage. Size Chart: Voltage: 120V Power: 1440W Package Includes: 1 socket Note: Please allow slight variations of 1-2cm due to manual measurement.