Coats Thread & Zippers-Dual Duty Plus Jean & Topstitching Thread. Extra strong, heavyweight, cotton covered polyester core thread in all the bright colors for fashion denim! Use for seams, hems and topstitching. For best results, use a size 16 jeans needle. This package contains one 60 yard spool of jean and topstitching thread. Comes in a variety of colors. Each sold separately. Imported.