This pressure washer undercarriage cleaner features 6 high pressure nozzles.Working pressure range is 1500 PSI to 4000 PSI. Suggest working pressure is 2500 PSI or higherHow to set up: Quick connect straight wand to undercarriage cleaner. Than quick connect angled wand to the straight wand. Than quick connect your long trigger to angled wand. Finally, control your trigger to pull two wands into the bottom of your car .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.Wide range of uses, suitable for garden cleaning, stair cleaning, car cleaning, dirt cleaning, etc.Specification:Name: Pressure washerWashing machine size: 13 inchNozzle aperture: 0.7mmNozzle external thread: NPT 1 or 4Colour:BlackMaterial:Aluminum alloyPackage Contents:1x Pressure washerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.