2.640-856.0 Features: -Dirtblaster.-Provides large area coverage with almost the same cleaning power as a solid pencil jet.-High-pressure pencil jet rotates at approximately 4,000 RPM.-Increases the effective cleaning pressure of pressure washer by up to 50pct.-Unsurpassed at removing stubborn dirt and solvents.-Fits Karcher gasoline pressure washers with a rating of 2600-3600 PSI.-Not recommended for delicate or painted surfaces. Includes: -Includes pre-assembled quick connect adapter. Collection: -For Gas PW"s collection. Warranty: -Manufacturer provides 90 days warranty.