1) The lock of the box snapped off after two uses. Now it can not be properly closed. A shame, but not end of the world.
2) two screwheads was left in the box on the right corner, with no placeholder. Guess it ran out of room.
3) the inner casing is made of plastic, i mean those soft and thin ones, plastic cup kinda plastic.
4) build quality for the screwheads overrall was ok. I tried a couple of them and the handle was comfortable with strong magnetic holds the scew heads tightly Should last for quite a while.
If you dont care about presentation then this is a good buy.