KX8810/KX8820 Single Needle/double Needle Postbed Sewing Machine with Wheelfeed, needle Feed Aad Driven Roller Presser This two machines are upper-grade products among protex postbed machines, thread-take-up is driven by slide lever. Feed system is compund of roller presser, wheel-type feed dog and needle feed, which enable the machines to sew all kinds of materials with smooth and neat, uniform stitch. applicoation ofbelt-transmit from the upper to lowernshtaft, and needle/ball beatly reduce friction and prolong the service life suitable for sewing high-grade shoes, bags, belts, canvas and jearnsr-cloths products with curved shape.