[New upgraded design]: all connectors of the professional foam monitor are made of high-performance PPS engineering plastic wrapped heavy metal, which is corrosion resistant and has strong sealing performance, so there is no need to worry about leakage when using; Add ergonomic grooves to the bottle body, making it easy to grip and less likely to slide; Strengthen the wide neck to prevent cracking and facilitate filling with soapy water. A filter head is added at the bottom of the fluid conduit to avoid foam blocking and unable to spray foam. [Adjustable snow foam gun]: foam gun, with 1/4 " quick connection connector. Container capacity: 1 liter/0.26 gallons. Specification: 1000 PSI to 4000 PSI. [Easy to use]: Fill the bottle with warm water and soap to obtain thick foam, and connect the 1/4 " quick connection plug to the high-pressure cleaning gun or cleaning rod. Turn the top knob to the right (-), and turn the top knob to the left (+) to adjust to the desired foam level, and adjust the nozzle to control the spray area and horizontal/vertical direction. The snow washing foam monitor is transparent, and you can see the rest of the cleaners. Clear scale lines facilitate observation of capacity. [Wide application]: foam gun is applicable to most 1000-4000PSI pressure cleaning machines. It can be used for cleaning cars, bicycles, motorcycles, floors, windows, lanes, roofs, wall panels, etc. It is very suitable for removing dust and dirt, and is the best product for detail trucks or SUVs. It is also the best choice for professional car wash personnel.