Description: This pressure washer soap injector kit works with any pressure washer 1500-4000 PSI with 3/8.inch quick connection fittings. It fits between a 3/8 inch pump outlet and 3/8 inch high pressure hose. The soap dispenser kit features a screw-in valve which allows you to adjust the dilution ratio and increases your pressure washer's effectiveness. Solid construction -the downstream injector is heavy duty to last a long time. Adjustable flow - increase or decrease the amount of chemical as needed Screw-in valve to positively shut off flow, allows for a wider choice of chemicals Specification: 3/8 inch quick connect 4000 PSI maximum at 2-5 GPM Rated PSI: 1600-4000 PSI Min GPM: 2 Max GPM: 5 colour:As shown in color Material:Plastic + brass + stainless steel Hose: 5m Inflow: 3/8 inch Threaded(Male) Outflow: 3/8 inch Threaded(Male) Package Includes: 1 x Chemical Injector 1 x 16 Ft Siphon Hose with Filter 1 x 3/8 Inch Female Snap Coupler 1 x 3/8 Inch Male Snap Coupler 1 x Soap Nozzle 2 x Tapes 1xRetractable Key Chain Note: if your power washer or hose has M22 or 1/4 inch connections, please purchase a coupler adapter individually. Pay attention to the direction-of-flow arrow on the injector and do not install it backwards. Only 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.