It does what it promises, but it requires strong arms because the gun is not held by the pressure it exerts on the side.

Very good, it cleans with a uniform spray and it is powerful. If you have never cleaned the bottom of your car, you will be amazed at how much dirt it will remove. It is necessary when the car is exposed to salt, either from the sea or from salt being spread on the road after snowfall, causing rust on everything underneath.