Our old faucet was totally calcified after eight years of use and leaking, so it had to be renewed. Since I could not find a craftsman who wanted to use my newly acquired Amazon Faucet Grohe, I had my old bones bend and make the assembly itself. It was a bit tricky due to the accompanying spacer ring made of plastic, which I Last but not had to use because our sink is not executed as thin as a stainless steel. After the installation worked smoothly. All connections are tight and hot and cold water can flow back to our kitchen sink. The Design of Grohe Euro Smart Lever mixer is appealing and the overall height so low that our kitchen window still leaves open. Since this is a brand-name product, a replacement of the cartridge should be possible without any problems even after years. From my perspective, the purchase is strongly recommended. I give only four stars because of the installation is a bit fiddly.