I received this collection last week. As soon as I received it, I did some tasks where I was very satisfied with the result. The chestnut with the nuts and therefore with the bolts that I wanted to unscrew, the collection's troxes, along with the other bits, powers, and crossheads, fit perfectly with the chestnut through a very good quality and precise chuck.
All the components of the collection are of very good quality with perfect fit among them.
BUT BEWARE
I'm not saying this as a negative so that no one chooses this collection. It is of very good quality with perfect fit, but only for light use. It is not suitable for heavy-duty use, only for light and moderate intensity use. If someone wants to use it for heavy-duty use on large bolts and old ones, it will not be convenient. They should choose a larger chestnut, for example, 1/2 or 3/8, possibly depending on the force they want to exert for their tasks.