4 stars then, at the price I bought it always (around 15 euros with shipping costs).
While the instructions inside, as often happens with similar products, are not clear enough, when I managed to assemble it correctly, I found that it works very well, withstands water pressure without losing from anywhere in particular, and does its job properly. I should note that if you live in an area with low water pressure, you may experience a problem. The foam function works very well, I always have it on 5 (maximum), and it performs very well for a product that costs 15 euros and without having convincing assistance. If the car hasn't been washed for a while, you will definitely need a sponge because the dirt doesn't come off easily, but with this specific tool, with one wash every two weeks, the car doesn't get bad enough to require a sponge. The most important thing that this product offers is definitely time/effort saving... Without it, I would have to bend down and scrub the entire car with a sponge, generally the whole process would take around 20-30 minutes, while now I finish washing in 10 minutes. Of course, as I did before, I do it now too, after washing, I wipe all the surfaces of the car thoroughly with a large towel, otherwise the salts leave their marks everywhere.