With a single click on the front of the gun you can exchange the needles

They contain 85% IPA and 15% DI water

Heavy-Duty Gun

Hydradrive™

BE B4015RA 4000 PSI @ 4.0 GPM Direct Drive PowerEase 420CC Triplex - AR RSV4G40 Gas Pressure Washert 600 CFM Exhaust With a single click on420cc 4000 PSI This unit features a powder coated steel frame, thermal valve, low pressure chemical injector, 1" keyed shaft, 36' gun wand couplings, 50' high pressure hose and 13" flat free tires. Features Powder Coated Steel Frame 85. 600. 125 12 Flat Free Tires 85. 660. 050BF Engine Oil 10W 30 85. 490. 002 Pump Oil 30W Non Detergent 85. 490. 000 Thermal Valve 85. 300. 024 Low Pressure Chemical Injector 1 Keyed Shaft Accessories Included 3 8 50ft