Tool Daily Dual-Function Undercarriage Cleaner With Swivel Wheel,, 4000 Psi ATTENTION: Working Pressure: 1500 PSI to 4000 PSI. 2500 PSI or higher will have better cleaning. Including 2 functions-in-1 Pressure Washer Undercarriage Cleaner (Length: 15.5 inch, Height: 4.9 inch), 2-pieces 16 inch pressure washer extension wands, 1-piece undercarriage cleaner swiveling wheel. All parts have 1/4" Quick Connect. With swiveling wheel, it will be easy to handle the undercarriage cleaner. It works for maximum maneuverability and portability. Undercarriage Cleaner Mode: With swiveling wheel, undercarriage cleaner will be easier to clean and avoid crawling under a vehicle. It will be easier to clean road grime, oil and fuel contaminants under cars, trucks, SUVs, commercial-size vehicles and trailers. It works as under carriage power washer. Water Broom Mode: Pressure washer surface cleaner attachment is used for quick, easy and even cleaning of surfaces. Power washer surface cleaner is ideal for removing loose debris (sand, leaves, light soil) from sidewalks, driveways, decks, etc.