NUOLUX Polyester Thread Set 250 Yards Polyester Yarn Sewing Quilting Threads 30 PCS This item is a pack of 30pcs sewing coils, which are made of polyester. It is ideal for quilting, sewing by hand, the sewing machine. Wonderful sweing machine coils for choice. Reel length: 250 yards per spool. Ideal for quilting, sewing by hand, the sewing machine. All thread are made of excellent polyester materials.