I bought 10 sets in total, but they differ slightly in shape. It is hard to think, but what kind of production method is it? I think that if it is produced in the same process, it will be of the same shape. As a matter of course the set has the same shape so there is no hindrance to use, but if you use it with 2 sets 4 pieces it can not be used.
How is the key hook of the wooden box not opening? I try to open it forcibly and it crooks and bends. We ordered 7 sets, the wooden box was damaged during shipping and returned. Thanks to the fact that there are 4 sets of stock, we received delivery, but the lid of 3 sets of wooden boxes out of 4 sets does not open. Is it being inspected whether the making is coarse and whether the lid opens smoothly.