FOXSEW Double Needle Heavy Duty Zipper Attaching Sewing Machine Applications for stitching Sofa Furniture, Automotive Upholstery, Car Interiors, Leather Sofas, Fabric Sofas, Shoes, Leather Armchairs, Leather Recliners, Bags, Sports Products, Car Seats, Leather Articles, Belts, Canvas, Tents, Awnings, Handbags, Outdoor Wear, Straps, Camping Goods etc... FOXSEW Zipper sewing machine FX1560N-TBL Simplified zipper sewing can be finished in one time, so that it canincrease production efficiency largely. It adopts horizontal large hook and standard 3/8inch needle gaugeset. It can sew maximum thread of 9 strands nylon. The synchronous pulling device with upper and lower feeding make thezipper sewing more stable, and the effect would be more smooth. The alternating amount of presser foot can be adjusted by hand. Three parts compound feed construction make sure feed smoothly whilesewing heavy or complicated material , and difficult to move for upper andlower material. Application : Zipper sewing process for soft furniture and office chair.