This item is ideal for printing on paper or binding books. Also suitable for veneer presses. However, the threads were cut in one or two passes, resulting in rough and uneven threading. To compensate, the jam nut is slightly larger so they don't fit tightly together. It will not withstand heavy repeated use. The two pieces can get crossed if you're not careful. At such a low price one cannot expect accuracy. For our paper art applications, this is ideal.