filter that goes into the chemical container, which allows you to use a wide variety of chemicals without harming your pumpThis 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 neededScrew-in valve to positively shut off flowAllows for a wider choice of chemicals3/8 inch quick connect4000 PSI maximum at 2-5 GPM10 feet of hose with filter goes into the chemical containerRated PSI: 1600-4000 PSIMin GPM: 2Max GPM: 5colour:As shown in colorMaterial:Plastic + brass + stainless steelsize:Hose: 3 meterInflow: 3/8 inch Threaded(Male)Outflow: 3/8 inch Threaded(Male)Package Contents:1 x Chemical Injector1 x 10 ft siphon hose with filter1 x 3/8 inch female snap coupler1 x 3/8 inch male snap coupler1 x soap nozzle2 x PTFE TapesNOTE: 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 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.