This is a 2-in-1 undercarriage cleaner and water broom attachment designed for pressure washers.
It typically features a dual-function design, allowing you to switch between cleaning the underside of vehicles and cleaning flat surfaces like driveways.
The attachment generally operates with pressures ranging from 1500 to 4000 PSI and includes extension wands for reach. [1, 2, 3, 4, 5]
Would you like help finding a specific brand, or perhaps looking for compatible pressure washers?