Features: The newly developed mode of highly rigid rectangular feed guarantees outstanding feed performance. The ratio between the alternating vertical movements of the walking foot and presser foot remains unchanged even when the material thickness changes. Heavy-duty compound feed sewing machine, Large hook for thick threads and heavy-duty materials. 2.5-7.0 mm top feed lift allows easy sewing even at cross-seams. Compared with the elliptical feed, the rectangular feed helps reduce gathered stitches. 16 mm clearance under the lifted sewing feet for easy loading and unloading. Max. 6 mm stitch length adjustable – forwards and backward. Hook protection against thread jamming realized by overload coupling; Cylinder arm diameter 72 mm; A full array of special sewing equipment is available for high productivity and perfect seam quality.