How to switch modes: Pull out the nut of the pivot connector at the end of the cleaner. Then rotate the pivot coupling to the end. Finally, the nut will lock automatically.Chassis cleaning mode: easy to clean and avoid crawling under the vehicle. Chassis washing machines are used to clean road dirt, oil and fuel pollution under trucks, SUVs, automobiles, commercial vehicles and trailers. It can be used as a carriage-powered washing machine.Water broom mode: The accessory of the high-pressure cleaner surface cleaner can be used to clean the surface quickly, easily and evenly. Electric washing machine surface cleaners are perfect for removing loose debris (sand, leaves, light soil) on sidewalks, driveways, decks, etc.Note: Working pressure: 1500 PSI to 4000 PSI. 2500 PSI or higher will have better cleaning effect.Including: 2 in 1 pressure washer chassis washercolour:blackMaterial:Stainless steel / brass / engineering plasticPackage Contents:1 * Undercarriage Cleaner1 * ConnectorOnly the above package content, other products are not included.Note: Light shooting 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.