1,GN20-6 fishnet sewing machine 2,over-edge width 10-15mm 3,three thread for overeding rope and net 4,stitch range ... 10-15mm3,three thread for overeding rope and net4,stitch range 7-16mGN20-6 3-thread overedging net sewing machine with synchronous traction ... function, the GN20-6 3-Thread Overedging Net Sewing Machine can keep the feed roller and stitching action in synchronization ...