Pwaccs Pressure Washer Undercarriage Cleaner - 16 Inch Power Washer, 4000 Psi. PACKAGE INCLUDE ? 1 pcs pressure washer undercarriage cleaner with 4 stainless steel sprayer nozzles and 2 rubber wheels. 2 pcs 15.9 inch straight extension wand, 1 pcs 45 degree curved wand. The wash mitt attached can be used to clean car body as well as meet other cleaning needs. WORKING CONDITION ? The working pressure range of undercarriage pressure washer is 1500 PSI to 4000 PSI. Power washer undercarriage cleaner's working pressure must higher than 1500 PSI. Under car cleaner's suggest pressure range is 2500 PSI or higher. WIDE APPLICATION ? Undercarriage washer works for clean road grime, oil and fuel contaminants under cars, trucks, jeeps, SUVs, commercial-size vehicles and trailers widely. It?s convenient to clean and avoid crawling under vehicles. EASY INSTALLATION ? Connect the first straight extension wand to under body pressure sprayer, the second extension straight wand to the first straight extension wand, and the second straight wand to the curved wand. Then connect the curved wand to the trigger gun. Finally, under the control of the trigger gun, you can push the wands and under carrier pressure washer easily into the bottom of car. 1/4? quick connect plug make it easier and quicker to connect and release power washer wand. PREMIUM SERVICE ? If you have any question about the under car pressure washer attachment, please contact us the first time. We provide a service of quick reply within 24 hours.