The Next 25 Serie II is an automatic bar feeder for multi-spindle lathes , completely integrated, able to handle bars with diameters between 4 and 25 mm and lengths between 2,850 and 4,200 mm . It is very compact and high-performing, suitable for making the most of the lathe, ensuring ease of use as well as the speeds of rotation ( more than 10,000 rotations/minute ), bar changes ( as little as 3 seconds ), and indexing. It is also silent, and all of these things translate into a considerable increase of productivity.