It rotates at high speeds to increase both the intensity and cleaning area of the spray. Multiplies ordinary pressure into powerful scrubbing power using a jet stream of rotating water. High pressure water nozzles attached with different size All nozzles are proved to work well with 4000 PSI pressure washers. Easily connect and remove the tips for different uses and these high efficiency tips reduce work fatigue. Accessories of pressure washers, for cleaning the car,mechanical equipment, floors, walls, etc. 40 degree (White, Stainless Steel, Sensitive Surfaces) Common use Such As Car Cleaning etc. Black Tip for soap. Specifications: Material:Stainless Steel Color: Black/White/Red/Yellow/Green Max Working Pressure: 4000 PSI Spray Patterns: 0-60, Soap How To Use: 1. Put PTFE tape on the brass tube. 2. Attach the fitting parts on foam lance unit. 3. Fill shampoo bottle with desired amount of shampoo. 4. Fill shampoo bottle with water, mix shampoo with water by the proportion of 14. 5. Shake the bottle to mix the shampoo with water thoroughly. 6. Attach bottle to foam lance unit. 7. Connect foam lance to pressure washer gun, and you can start playing with it. 8. Disconnect foam lance from the washer gun after foaming. 9. Attach jet spray nozzle to washer gun, start cleaning the thick foam.