I've made my decision, because the production has been positive reviews and one of the judges spoke of the concrete Stampfer was almost 20 kg for this concrete Stampfer. I wanted to have a serious possible concrete Stampfer. Well, that sent part weighs ncht even 10 kg or more precisely 9.8 kg. But the seller has no weight, so that I can not hold against him. Since it would have a concrete stamper 20 x 20 x 83 cm for 29 Euro also done. At the photo comparison we see no difference between this and a less expensive concrete Stampfer.