Nothing wrong with the level of production. This cable is of good quality. However, know that 15cm is VERY short. It is possible that you were to put your hard disk / SSD / scanner / other directly vis-à-vis the SATA connector on the motherboard, the risk of not having enough length. I definitely recommend longer cable lengths for a more comfortable installation of your equipment. If that is all you need as long (specific projects, very calculated editing ...), go for it, it's a good cable.
