Features: Make of brass and stainless steel, resistant to corrosion and fading. The maximum pressure is 4000PSI. Flows arrows Mark on the injectors and do not install it backwards. Package Includes Chemically injectors, 10ft tubing (siphon hose), filter and 1/4 inch quickly connect black soap nozzle. Equipped with a screw-in valves that adjusts the dilution ratio of chemicals and water to increase the efficiency of your highly pressure washers. When detergent is sucked out separately, the Chemically will not pass through the pump, you could use a variety of chemicals no damaging the pump. Specifications: Materials: Brass and Stainless Steel Body Length: about 15cm/5.90inch Hose length: about 3.0m/10ft Package Includes: 1set Adjustable Chemically Injector Kits note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.