This 25″ arm double needle compound feed split needle bar lockstitch machine is an industry first! Two large vertical axis hooks are used to ensure uniform stitch quality with smooth operation, low noise levels and a long service life. A longer version of model GC20638 it offers many of the same features in a longer machine with increased working space. It is used to sew tents, parachutes, awnings, car and truck covers, hot air balloons, and other large articles where two simultaneous rows of lock stitches are required in addition to having the capability to turn corners without cross over. It is also available in an undertrimming version model GC20638-25D for those seeking higher productivity with added functions.