1LIGHTWEIGHT AND STRONG: The package contain 3 sets of sewing machine thread holders, which are strong, lightweight, reusable and have a long service life 2EASY TO INSTALL: Sewing machine line frame structure is stable, excellent performance, easy to assemble, disassemble and store, simple to use. Can be installed very quickly, saving time and effort, and providing you with better service 3STABLE AND EFFICIENT: Sewing machine spool has maximum stability, which can make your sewing work more smooth, thus greatly improving efficiency 4UNIVERSAL AND VERSATILE: Thread holder is used in vintage sewing machines, which is suitable for all kinds of sewing thread and spool, useful and practical 5MAIN USES: Sewing machine thread holder is the part attached to the bobbin shaft that hold the thread in place and help the thread to unfold correctly and not jump around when sewing 3 x Spool Stand Shaft 3 x Spool Stand Tray 3 x Spool Stand Clamp