The Roborock WD5M7B Wet Dry Vacuum Clean Water Tank/ Nozzle Cover is a genuine replacement part specifically designed for the Roborock WD5M7B model. This set includes a water tank that is compatible with the WD5M7B vacuum cleaner, ensuring a proper fit and function for cleaning both wet and dry surfaces. The nozzle cover is also included, providing a complete solution for maintaining the overall performance of your Roborock vacuum cleaner.