It is good. German wrench holds it comfortably. And it holds nuts, but in a different way. It is worth its money.

It is a bit heavy and the magnets are not as strong as one would hope by looking at the photo, but it is very practical. It holds screws and small accessories, but not a wrench (at least not a 10+, maybe a 6 would hold well). It is also not suitable for automotive mechanical work - neither are the magnets reliable enough to prevent something from falling inside a multiple, nor can you perform such tasks with such a beast on your wrist.

Those who work alone will find it particularly useful, especially if they climb ladders or similar situations, as they can have screws and accessories with them from the first climb. Personally, I found it very useful in woodworking, as I always have all the screws I need to assemble something, along with the screwdriver tip and drill bit, without having to go back and forth.