OBW semi automatic looping machines are desgined for production of German (machine) and English loops (available only on OBW-2) on precoiled extension springs (p.e. on WIM CNC or COM CNC spring coiling machines). With OBW you can produce all kinds of simple German (machine) loops (loop height from 0.40 to 1.00 times spring media diameter) on right and left coiled springs. With each delivered device you will receive a set-up video which will allow you to learn very fast how to work with. Check MPK hydraulic looping machines for bigger wire diameters.