Expanding Metal Foam Gun - Easy Clean, Accurate

Upgraded PU foam gun with integrated valve. After use, simply close the valve and push the remaining foam, without using a special cleaner. Economical and practical. Spring trigger and adjustment knob allow precise control of spray flow and distance, reducing foam waste. Copper tip for smooth flow. Suitable for filling, sealing and insulating small cracks and joints. Ideal for doors and windows, balconies, bathtubs, air conditioning holes and other domestic work.