Specification:Max Pressure: 4500 PSIMax Flow Rate: 6.6 G.P.MMax Temp: 158℉Required Min Pressure: 2000 PSIConnection 3/8'' Quick PlugFeatures:【Professional Surface Cleaner 】Delivers commercial level cleaning about an area 20'' wide.Perfect for cleaning off stubborn stains in large surfaces such as driveways, patios, decks, and sidewalks.【High Efficiency】Integrated rotary rod,Dual high-pressure rotating jets clean up to 8 X FASTER than a standard spray nozzle.4 pcs universal castors for smooth movement.【Premium Quality】Heavy duty stainless steel housing,customized high pressure washer hose and sturdy spray gun for long time use.Tough flexible bristles protect work surface and controls over-spray.Work with Gas/Electric pressure washers from 2,000 PSI up to 4,500 PSI , max6.6 GPM.【Good Compatibility】with 2 adapters,can be attached to 3/8'' quick Connector,Including optional 1/4'' quick adapter set for quick connection,installation wrench,nozzler cleaner, teflon tape,clean towel and a manual.【Special Improvement】Reinforced internal structure of high pressure spray gun;Design of locking trigger for saving effort;Built in filter screen at gun inlet preventing impurities blockage.Package Include:2 x Nozzle Replacement(25°)1 x 1/4'' Quick Connect Adapter Set（for swivel and hose）1 x Installation & Maintenance Tool Kit (Tape、Manual)1 x Needle to dredge the nozzle