The principle with locking screws has advantages and disadvantages.
Advantages:
I really can set the hole spacing infinitely.
Disadvantages:
I have to measure it accurately to the hole spacing to adjust, which is troublesome if öffters a change between different hole spacing is necessary.
Unfortunately, it lacks a system rail, so that either the first page must always be buckled in the middle, or the outer edges of the pages to be punched must be marked on punch itself.
From the processing but I am pleasantly surprised.
Conclusion: price-performance ratio is good; and the equipment and the range of functions in accordance with the product description
