With this Under Car Pressure Washer is easy to clean and avoid crawling under a vehicle. Clean road grime, oil and fuel contaminants under cars, trucks, SUVs, commercial-size vehicles and trailers. How to set up Undercarriage Cleaner: Quick connect straight wand to undercarriage cleaner. Than quick connect angled wand to the straight wand. Than quick connect your long trigger gun to angled wand. Finally, control your trigger gun to pull two wands into the bottom of your car. Package List: 13’’ undercar cleaner, 13.5’’ straight extension wand, 14.5’’ 45 degree curved wand. The Under Car Pressure Washer works for hot and cold water power washer. It has 4 nozzles and 2 casters. Material: Aluminum, Brass, Hard Composite Casters, Stainless Steel Nozzles. Max Temp: 140°F.  Please Note: 1. MAKE SURE YOUR WORKING PRESSURE WASHER IS HIGHER THAN 1500 PSI. Pressure range: 1500 PSI to 4000 PSI. 2500 PSI or higher will have best result. 2. Please use water inline filter to avoid nozzle blocked by sand or other debris. If nozzle are blocked with sand or other debris, you can remove the nozzle, clean with needle and rinse with fresh water.