We bought this unit to smoothies with frozen fruit produce. The first were really delicious too, creamy and delicious. The mixer was good to use and easy to clean. But then, after a few weeks, the mishap happened. Although we had done everything according to regulations, came after turning an ugly sound and then the knife no longer revolved. The plastic piece, which transmits the movement from the motor to the blade was knocked off completely. How can you as a part also make only made of plastic ... Nevertheless, 3 stars, because as I said, at first everything was fine, and maybe we just caught a Monday device. Moreover, the complaint after intervention Amazon was handled without problems, we received the purchase price.