Product Description 1. This type is aluminum pressure regulating valve, aluminum body, plastic foam body. (Note: this plastic foam body is not replaceable) 2. Attention for maintenance of foam bottle: wash the car with clean water after washing the car to avoid the blockage caused by the residual detergent/powder in the product (90% of the foam bottle problems are caused by the blockage). Please take care of it. Feature: 1. Foam Lance core is made of quality brass, which have adjustment function that allow you to dial-in the sprayer for any situation. Filling up the reservoir bottle with soap, click into your existing pressure washer lance or trigger, adjust the knob for your desired foam level, and spray! 2. Requires Pressure Washer to Have 2.0GPM & Over 1000 PSI Pressure for use, Max Temp 60 Degree, Maximum Pressure 160 Bar, Maximum flow: 5.3Gpm, adjustable Snow Foam Lance with 1/4" quick disconnection fitting. Container Capacity: 1 Liter / 0.22 Gallon. 3. Easy to use, fill some soap into the bottle with warm water to get thick foam, connect 1/4" quick connection plug to pressure washer gun or wand, adjust the knob on the top to desired foam level and then foam blaster will disperse thick foam. 4. Adjustable nozzle for accurate mixing and foam generation. Turn the top knob right (-) to get the thickest mixture, adjust the nozzle to get a proper sprinkle pattern, and let it loose. 5. Perfect for car cleaning, windows washing, driveways, roofs, siding washing, it is best product for Detailing Trucks or SUVs. Specification: Type: Car Foam Lance Bottle Material: Plastic + Brass + Aluminium Color: White Inlet: 1/4" Quick Connect Adapter Capacity: 1L Maximum Pressure :160BAR Max Temp. 60 Celsius Size: 30cmX18cm How to operate: - Fill the bottle with hot/warm water before adding soap. This helps your solution mix together. - Adjust the spray nozzle first to find the stream of water that works for you. You can adjust it so that it sprays in a decent fan pattern. - Adjust the knob on the top to control how much water is mixed in. - The minus (-) sign indicates less water (so more foam is produced), and the (+) indicates more water (so less foam is produced). - DO NOT max out the knob onto the (-) side otherwise you wont get much foam. - You can turn it all the way to the (-) then dial it back a little, this produced a ton of foam. NOTE: 1. Wipe free car washing powder/pure water wax and other washing liquids can not produce rich foam due to their low foaming, so it is recommended to use high foaming car washing liquid! 2. The faucet/tap water/booster pump/medicine dispenser/pressure car washer (lithium battery is lower than 30KG pressure) cannot use this product. 3. The pressure and water output of the car washer will affect the foam effect