I bought this angle valve, because I needed a new faucet. That's why I system sold two angle valves, since these were calcified and difficult to move. I was of the quality of the valves more than thrilled. Especially at this price one does not need to unbdedingt articles from Grohe and Co. access. Visually make a high-quality impression. All in one top article only the installation instructions are a bit misleading, but actually the installation is self-explanatory. The installation / replacement is easily possible for people with artisan-skill.