Vacuum-cnc launches its patented door jamb clamp for cnc machines. It is activated by vacuum and requires no external setting-up. - Designed for clamping jambs, mouldings and studs from 40 to 190 mm. - It is placed over two bases of our brand and adapts to all cnc machines. No need to make any modifications to your machine. - It is a double clamp, designed to be able to make both the box for the hinges, as well as for the closure of the slip.