ATTENTION: Working pressure is 1000 to 3200 PSI. Flow rate is from 1.5 GPM to 4 GPM. The presure which is higher than 3200 PSI will not work. Application: Must Follow Manual to Set Up Chemical Injector. It is used to siphon detergent out of separate container. The chemical runs after pump. So it allows for a wider choice of chemicals. Chemical injector has standard 3/8inch quick connect fitting. It connects pressure washer pump to hose. Dilution ratio of chemical water can been adjusted by controlling metering valve. Works with most of gas and electric pressure washer. Suitable for cold and hot water pressure washer. colour:Transparent+gold Material:metal size:Tube length: about 3 meters Package contents: 1 x Chemical injector 1 x 10 Feet tubing 1 x Filter 1 x Black soap nozzle 2 x PTFE tape (The color is random, the specified color cannot be ) 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.