Very good product, less a star because the weld is really too far from the edge, and the price of roll it hurts the heart. Perfect soldering and aspiration is very satisfactory. By cons is noisy and bulky. If you do not have a drop site. For things in sauce, the liquid goes back to the aspiration, we must either stop aspiration by launching welding, either leave the bag in the fridge a few hours if the sauce freezes in the cold.