The IV 25 Boring head is applied in machining faces and cylindrical surfaces with different recesses, both from the front and from the rear of Work piece. It is also suitable for the production of internal recesses and slots in holes. The Boring head consist of the head body which serves as a guide for the traversing slide. The slide is fitted with several holes to receive different tool holders. The body is fitted with a cylindrical shank. The rotary motion of the spindle is transmitted by means of gears and a worm to a nut which is moving the slide. The feed motion is infinitely variable.