Less than 1 star! This product is absolutely useless! Reason: I have been working with the original from "Nie-wieder-bohren" for years. However, the WENKE imitation product does not work because the silicone is far too viscous and therefore cannot be squeezed out of the tube in a controlled manner. If too much force is then applied (has to be applied), not only does the plastic attachment, which should actually fit into the wall holder, break away, but all the silicone escapes sideways and not into the round holder. This is because the parts are not matched to each other in terms of size and everything is made of plastic. By way of comparison, the tube of the never-drill-again tool is made of aluminum, the key fits onto the tube with very little play and, above all, the tube outlet fits exactly into the holes of the round holder. This means that the silicone cannot escape sideways at all, but can only spread between the round holder and the wall, which is how it should be .... I will return both products open and hope that Migros will resolve these problems with the manufacturer or purchase the far superior competitor product. It's worth it!