This industrial sewing machine 1. Equipped with upper roller&bottom wheel. 2. Suitable for boot,sport shoes,leather ... of bobbin replacement, and increase sewing efficiency.2. Upper roller, lower wheel and synchronized needle feeding, ensure smooth sewing ... = new AE.run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Roller Feed Postbed Industrial Sewing Machine